World Football Elo Ratings
Encyclopedia
The World Football Elo Ratings is a ranking system for men's national teams in association football. The method used to rank teams is based upon the Elo rating system
method but modified to take various football-specific variables into account. Elo should not be confused with the FIFA World Rankings
, which is more prevalent because it is the official rating system used by the international governing body of football
to rank national teams.
The ratings take into account all international "A" matches for which results could be found. Ratings tend to converge on a team's true strength relative to its competitors after about 30 matches. Ratings for teams with fewer than 30 matches should be considered provisional.
The FIFA Women's World Rankings
uses a simplified version of the Elo formula. The FIFA men's ranking
, however, uses a non-Elo formula.
Each national team's FIFA World Rankings
as of 19 October 2011.
for a top 50 and for tables of the Strongest teams per decade since 1910.
-American mathematician Dr. Árpád Élő
, is used by FIDE
, the international chess federation, to rate chess
players, and by the European Go Federation
, to rate Go players. In 1997 Bob Runyan adapted the Elo rating system to international football
and posted the results on the Internet
. He was also the first maintainer of the World Football Elo Ratings web site.
The factors taken into consideration when calculating a team's new rating are:
The different weights of competitions in descending order are:
The single difference is Elo giving a special treatment for minor tournaments, while FIFA consider them as friendly matches.
These ratings take into account all international "A" matches for which results could be found. Ratings tend to converge on a team's true strength relative to its competitors after about 30 matches. Ratings for teams with fewer than 30 matches should be considered provisional. Match data are primarily from International Football 1872 - Present web site.
The ratings are based on the following formulae:
or
Where;
If the game is a draw or is won by one goal
If the game is won by two goals
If the game is won by three or more goals
Table of examples:
where dr equals the difference in ratings plus 100 points for a team playing at home.
So dr of 0 gives 0.5, of 120 gives 0.666 to the higher ranked team and 0.334 to the lower, and of 800 gives 0.99 to the higher ranked team and 0.01 to the lower.
for a fair comparison. Some actual examples should help to make the methods of calculation clear. In this instance it is assumed that three teams of different strengths are involved in a small friendly tournament on neutral territory.
Before the tournament the three teams have the following point totals.
Thus, team A is by some distance the highest ranked of the three:
The following table shows the points allocations based on three possible outcomes of the match between the strongest team A, and the somewhat weaker team B:
When the difference in strength between the two teams is less, so also will be the difference in points allocation. The following table illustrates how the points would be divided following the same results as above, but with two roughly equally ranked teams, B and C, being involved:
Note that Team B loses more ranking points by losing to Team C than by losing to Team A.
Elo rating system
The Elo rating system is a method for calculating the relative skill levels of players in two-player games such as chess. It is named after its creator Arpad Elo, a Hungarian-born American physics professor....
method but modified to take various football-specific variables into account. Elo should not be confused with the FIFA World Rankings
FIFA World Rankings
The FIFA World Rankings is a ranking system for men's national teams in association football, currently led by Spain. The teams of the member nations of FIFA , football's world governing body, are ranked based on their game results with the most successful teams being ranked highest...
, which is more prevalent because it is the official rating system used by the international governing body of football
FIFA
The Fédération Internationale de Football Association , commonly known by the acronym FIFA , is the international governing body of :association football, futsal and beach football. Its headquarters are located in Zurich, Switzerland, and its president is Sepp Blatter, who is in his fourth...
to rank national teams.
The ratings take into account all international "A" matches for which results could be found. Ratings tend to converge on a team's true strength relative to its competitors after about 30 matches. Ratings for teams with fewer than 30 matches should be considered provisional.
The FIFA Women's World Rankings
FIFA Women's World Rankings
The FIFA Women's World Rankings for football were introduced in 2003, with the first rankings published in March of that year, as a follow-on to the existing FIFA World Rankings for men...
uses a simplified version of the Elo formula. The FIFA men's ranking
FIFA World Rankings
The FIFA World Rankings is a ranking system for men's national teams in association football, currently led by Spain. The teams of the member nations of FIFA , football's world governing body, are ranked based on their game results with the most successful teams being ranked highest...
, however, uses a non-Elo formula.
Top 60 ranking
Current table, as of 17 November 2011, of the World Football Elo rankings, compiled by the World Football Elo Ratings web site.Each national team's FIFA World Rankings
FIFA World Rankings
The FIFA World Rankings is a ranking system for men's national teams in association football, currently led by Spain. The teams of the member nations of FIFA , football's world governing body, are ranked based on their game results with the most successful teams being ranked highest...
as of 19 October 2011.
Elo Rank | Nation | Points | Confederation | FIFA Rank |
---|---|---|---|---|
1 | 2093 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
1 | |
2 | 2057 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
3 | |
3 | 2042 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
2 | |
4 | 2039 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
6 | |
5 | 1968 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
4 | |
6 | 1926 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
5 | |
7 | 1893 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
10 | |
8 | 1874 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
7 | |
9 | 1865 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
8 | |
10 | 1861 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
9 | |
11 | 1857 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
13 | |
12 | 1844 | CONCACAF CONCACAF The Confederation of North, Central American and Caribbean Association Football is the continental governing body for association football in North America, Central America and the Caribbean... |
20 | |
13 | 1831 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
18 | |
14 | 1811 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
15 | |
15 | 1803 | AFC Asian Football Confederation The Asian Football Confederation is the governing body of association football in Asia. It has 46 member countries, mostly located on the Asian continent. However, due to the disputed boundary of Europe and Asia, nations such as Russia and Turkey which are located mostly in geographic Asia are... |
22 | |
16 | 1800 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
11 | |
17 | 1794 | CAF Confederation of African Football The Confederation of African Football is the administrative and controlling body for African association football.CAF represents the national football associations of Africa, runs continental, national, and club competitions, and controls the prize money, regulations and media rights to those... |
16 | |
18 | 1789 | AFC Asian Football Confederation The Asian Football Confederation is the governing body of association football in Asia. It has 46 member countries, mostly located on the Asian continent. However, due to the disputed boundary of Europe and Asia, nations such as Russia and Turkey which are located mostly in geographic Asia are... |
19 | |
19 | 1788 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
12 | |
20 | 1775 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
21 | |
21 | 1768 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
24 | |
22 | 1765 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
33 | |
23 | 1760 | CAF Confederation of African Football The Confederation of African Football is the administrative and controlling body for African association football.CAF represents the national football associations of Africa, runs continental, national, and club competitions, and controls the prize money, regulations and media rights to those... |
29 | |
24 | 1759 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
14 | |
25 | 1758 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
42 | |
26 | 1755 | AFC Asian Football Confederation The Asian Football Confederation is the governing body of association football in Asia. It has 46 member countries, mostly located on the Asian continent. However, due to the disputed boundary of Europe and Asia, nations such as Russia and Turkey which are located mostly in geographic Asia are... |
32 | |
27 | 1746 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
36 | |
28 | 1740 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
55 | |
29 | 1737 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
17 | |
30 | 1733 | AFC Asian Football Confederation The Asian Football Confederation is the governing body of association football in Asia. It has 46 member countries, mostly located on the Asian continent. However, due to the disputed boundary of Europe and Asia, nations such as Russia and Turkey which are located mostly in geographic Asia are... |
45 |
Elo Rank | Nation | Points | Confederation | FIFA Rank |
---|---|---|---|---|
31 | 1732 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
35 | |
32 | 1726 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
25 | |
33 | 1719 | CONMEBOL CONMEBOL The South American Football Confederation , commonly known as CONMEBOL , is the continental governing body of association football in South America and it is one of FIFA's six continental confederations... |
39 | |
34 | 1718 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
28 | |
35 | 1716 | CAF Confederation of African Football The Confederation of African Football is the administrative and controlling body for African association football.CAF represents the national football associations of Africa, runs continental, national, and club competitions, and controls the prize money, regulations and media rights to those... |
31 | |
36 | 1696 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
27 | |
37 | 1693 | CONCACAF CONCACAF The Confederation of North, Central American and Caribbean Association Football is the continental governing body for association football in North America, Central America and the Caribbean... |
34 | |
38 | 1682 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
66 | |
39 | 1678 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
56 | |
40 | 1674 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
49 | |
41 | 1666 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
23 | |
42 | 1656 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
41 | |
43 | 1653 | CAF Confederation of African Football The Confederation of African Football is the administrative and controlling body for African association football.CAF represents the national football associations of Africa, runs continental, national, and club competitions, and controls the prize money, regulations and media rights to those... |
43 | |
44 | 1650 | CONCACAF CONCACAF The Confederation of North, Central American and Caribbean Association Football is the continental governing body for association football in North America, Central America and the Caribbean... |
51 | |
45 | 1647 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
37 | |
46 | 1645 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
37 | |
47 | 1642 | CAF Confederation of African Football The Confederation of African Football is the administrative and controlling body for African association football.CAF represents the national football associations of Africa, runs continental, national, and club competitions, and controls the prize money, regulations and media rights to those... |
48 | |
48 | 1636 | CONCACAF CONCACAF The Confederation of North, Central American and Caribbean Association Football is the continental governing body for association football in North America, Central America and the Caribbean... |
54 | |
49 | 1626 | CONCACAF CONCACAF The Confederation of North, Central American and Caribbean Association Football is the continental governing body for association football in North America, Central America and the Caribbean... |
47 | |
50 | 1625 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
26 | |
1625 | CONCACAF CONCACAF The Confederation of North, Central American and Caribbean Association Football is the continental governing body for association football in North America, Central America and the Caribbean... |
64 | ||
52 | 1624 | AFC Asian Football Confederation The Asian Football Confederation is the governing body of association football in Asia. It has 46 member countries, mostly located on the Asian continent. However, due to the disputed boundary of Europe and Asia, nations such as Russia and Turkey which are located mostly in geographic Asia are... |
81 | |
53 | 1623 | CAF Confederation of African Football The Confederation of African Football is the administrative and controlling body for African association football.CAF represents the national football associations of Africa, runs continental, national, and club competitions, and controls the prize money, regulations and media rights to those... |
44 | |
54 | 1618 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
50 | |
55 | 1611 | AFC Asian Football Confederation The Asian Football Confederation is the governing body of association football in Asia. It has 46 member countries, mostly located on the Asian continent. However, due to the disputed boundary of Europe and Asia, nations such as Russia and Turkey which are located mostly in geographic Asia are... |
76 | |
56 | 1603 | AFC Asian Football Confederation The Asian Football Confederation is the governing body of association football in Asia. It has 46 member countries, mostly located on the Asian continent. However, due to the disputed boundary of Europe and Asia, nations such as Russia and Turkey which are located mostly in geographic Asia are... |
72 | |
57 | 1595 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
85 | |
58 | 1594 | UEFA UEFA The Union of European Football Associations , almost always referred to by its acronym UEFA is the administrative and controlling body for European association football, futsal and beach soccer.... |
51 | |
1594 | CAF Confederation of African Football The Confederation of African Football is the administrative and controlling body for African association football.CAF represents the national football associations of Africa, runs continental, national, and club competitions, and controls the prize money, regulations and media rights to those... |
53 | ||
60 | 1578 | CONCACAF CONCACAF The Confederation of North, Central American and Caribbean Association Football is the continental governing body for association football in North America, Central America and the Caribbean... |
72 |
Top 10 since 1970
The following is a list of the national teams with the highest average Elo score from January 1, 1970 to November 1, 2011. See Strongest football nations by Elo RatingsStrongest football nations by Elo Ratings
National football teams can be ranked by their average Elo scores over time periods, following similar approaches in for example chess. The averages over time are calculated from the scores on the .-Strongest teams since the mid to late 1960s:...
for a top 50 and for tables of the Strongest teams per decade since 1910.
Rank | Country | Average Elo rating |
---|---|---|
1 | 2009.9 | |
2 | 1972.0 | |
3 | 1925.3 | |
4 | 1922.5 | |
5 | 1920.7 | |
6 | 1898.8 | |
7 | 1898.0 | |
8 | 1883.5 | |
9 | 1853.7 | |
10 | 1837.2 |
List of number one teams
The following is the list of nations who have achieved the number one position on the World Football Elo Ratings in the last five years:Start Date | Nation | # of days |
---|---|---|
October 7, 2006 | 122 | |
February 6, 2007 | 1 | |
February 7, 2007 | 140 | |
June 27, 2007 | 14 | |
July 11, 2007 | 4 | |
July 15, 2007 | 334 | |
June 13, 2008 | / | 2 |
June 15, 2008 | 6 | |
June 21, 2008 | 368 | |
June 24, 2009 | 373 | |
July 2, 2010 | 1 | |
July 3, 2010 | / | 3 |
July 6, 2010 | 1 | |
July 7, 2010 | 335 |
Ranking by days as leader since January 1, 2000
Nation | # of days | Last Date as Leader |
---|---|---|
1878 | 1 July 2010 | |
1115 | 10 July 2007 | |
375 | Current | |
316 | 14 July 2007 | |
109 | 6 July 2010 | |
43 | 15 August 2006 | |
8 | 7 June 2005 |
All-time highest ratings
The following is a list of national football teams ranked by their highest Elo score ever reached.Rank | Nation | Points | Date |
---|---|---|---|
1 | 2166 | 30 June 1954 | |
2 | 2153 | 17 June 1962 | |
3 | 2140 | 11 July 2010 | |
4 | 2117 | 3 April 1957 | |
5 | 2105 | 15 August 2001 | |
6 | 2100 | 6 July 2010 | |
7 | 2099 | 4 September 1974 (as West Germany) | |
8 | 2079 | 20 July 1939 | |
9 | 2046 | 1 September 1974 | |
10 | 2041 | 22 October 1966 | |
11 | 2035 | 13 June 1928 | |
12 | 2022 | 9 October 1983 (as Soviet Union) | |
13 | 1999 | 27 June 2004 | |
14 | 1998 | 31 May 1934 | |
15 | 1982 | 15 November 2000 | |
16 | 1967 | 11 July 1998 | |
17 | 1961 | 25 June 1998 (as FR Yugoslavia) | |
18 | 1960 | 13 June 1986 | |
19 | 1953 | 10 March 1888 | |
20 | 1950 | 25 June 1950 | |
21 | 1936 | 19 June 2005 | |
22 | 1932 | 21 February 1954 | |
23 | 1918 | 12 July 2011 | |
24 | 1916 | 9 September 1981 | |
25 | 1913 | 13 June 2000 |
Highest rated matches
A list of the 10 matches between teams with the highest combined Elo ratings (the nation's points before the matches are given).Rank | Combinedpoints | Nation 1 | Elo 1 | Nation 2 | Elo 2 | Score | Date | Occasion | Location |
---|---|---|---|---|---|---|---|---|---|
1 | 4211 | 2100 | 2111 | 0 : 1 | 2010-07-11 | World Cup F 2010 FIFA World Cup Final The 2010 FIFA World Cup Final was a football match that took place on 11 July 2010 at Soccer City in Johannesburg, South Africa, to determine the winner of the 2010 FIFA World Cup. Spain defeated the Netherlands 1–0 with a goal from Andrés Iniesta four minutes from the end of extra time... |
Johannesburg Johannesburg Johannesburg also known as Jozi, Jo'burg or Egoli, is the largest city in South Africa, by population. Johannesburg is the provincial capital of Gauteng, the wealthiest province in South Africa, having the largest economy of any metropolitan region in Sub-Saharan Africa... |
||
2 | 4161 | 1995 | 2166 | 3 : 2 | 1954-07-04 | World Cup F 1954 FIFA World Cup Final - External links :* - fifa.com, FIFA, 2002.*... |
Bern | ||
3 | 4158 | 2050 | 2108 | 2 : 1 | 2010-07-02 | World Cup QF | Port Elizabeth | ||
4 | 4150 | 2061 | 2089 | 0 : 0 | 2011-06-04 | Friendly | Goiania Goiânia -Climate:The city has a tropical wet and dry climate with an average temperature of . There's a wet season, from October to April, and a dry one, from May to September. Annual rainfall is around 1,520 mm.... |
||
5 | 4148 | 2068 | 2080 | 0 : 1 | 1973-06-16 | Friendly | Berlin Berlin Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union... |
||
6 | 4129 | 2085 | 2044 | 1 : 0 | 2010-07-07 | World Cup SF | Durban Durban Durban is the largest city in the South African province of KwaZulu-Natal and the third largest city in South Africa. It forms part of the eThekwini metropolitan municipality. Durban is famous for being the busiest port in South Africa. It is also seen as one of the major centres of tourism... |
||
7 | 4119 | 2050 | 2069 | 1 : 0 | 1982-03-21 | Friendly | Rio de Janeiro Rio de Janeiro Rio de Janeiro , commonly referred to simply as Rio, is the capital city of the State of Rio de Janeiro, the second largest city of Brazil, and the third largest metropolitan area and agglomeration in South America, boasting approximately 6.3 million people within the city proper, making it the 6th... |
||
8 | 4118 | 2108 | 2010 | 4 : 2 | 1954-06-27 | World Cup QF | Bern | ||
9 | 4116 | 2141 | 1975 | 4 : 2 | 1954-06-30 | World Cup SF | Lausanne Lausanne Lausanne is a city in Romandy, the French-speaking part of Switzerland, and is the capital of the canton of Vaud. The seat of the district of Lausanne, the city is situated on the shores of Lake Geneva . It faces the French town of Évian-les-Bains, with the Jura mountains to its north-west... |
||
10 | 4113 | 2079 | 2034 | 2 : 1 | 1974-07-07 | World Cup F 1974 FIFA World Cup Final -References:... |
Munich Munich Munich The city's motto is "" . Before 2006, it was "Weltstadt mit Herz" . Its native name, , is derived from the Old High German Munichen, meaning "by the monks' place". The city's name derives from the monks of the Benedictine order who founded the city; hence the monk depicted on the city's coat... |
History
This system, developed by HungarianHungary
Hungary , officially the Republic of Hungary , is a landlocked country in Central Europe. It is situated in the Carpathian Basin and is bordered by Slovakia to the north, Ukraine and Romania to the east, Serbia and Croatia to the south, Slovenia to the southwest and Austria to the west. The...
-American mathematician Dr. Árpád Élő
Árpád Élo
Arpad Emrick Elo is the creator of the Elo rating system for two-player games such as chess. Born in Egyházaskesző, Austro-Hungarian Empire, he moved to the United States with his parents as a child in 1913.Elo was a professor of physics at Marquette University in Milwaukee, Wisconsin. He was...
, is used by FIDE
Fédération Internationale des Échecs
The Fédération Internationale des Échecs or World Chess Federation is an international organization that connects the various national chess federations around the world and acts as the governing body of international chess competition. It is usually referred to as FIDE , its French acronym.FIDE...
, the international chess federation, to rate chess
Chess
Chess is a two-player board game played on a chessboard, a square-checkered board with 64 squares arranged in an eight-by-eight grid. It is one of the world's most popular games, played by millions of people worldwide at home, in clubs, online, by correspondence, and in tournaments.Each player...
players, and by the European Go Federation
European Go Federation
The European Go Federation is a non-profit organization with the purpose of encouraging, regulating, co-ordinating, and disseminating the playing of the board game Go in Europe. The EGF was founded in 1957, the same year that the inaugural European Go Congress took place - in Cuxhaven, Germany...
, to rate Go players. In 1997 Bob Runyan adapted the Elo rating system to international football
Football (soccer)
Association football, more commonly known as football or soccer, is a sport played between two teams of eleven players with a spherical ball...
and posted the results on the Internet
Internet
The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...
. He was also the first maintainer of the World Football Elo Ratings web site.
Overview
The Elo system was adapted for football by adding a weighting for the kind of match, an adjustment for the home team advantage, and an adjustment for goal difference in the match result.The factors taken into consideration when calculating a team's new rating are:
- The team's old rating
- The considered weight of the tournament
- The goal difference of the match
- The result of the match
- The expected result of the match
The different weights of competitions in descending order are:
- World CupFIFA World CupThe FIFA World Cup, often simply the World Cup, is an international association football competition contested by the senior men's national teams of the members of Fédération Internationale de Football Association , the sport's global governing body...
Finals - Continental championshipsFootball Continental ChampionshipsThere are 6 association football continental championships for National Teams from each of the 6 continental confederations contested every 2 to 4 years...
finals and Intercontinental tournaments - World Cup and Continental championship qualifiers
- All other tournaments
- Friendly matches
The single difference is Elo giving a special treatment for minor tournaments, while FIFA consider them as friendly matches.
These ratings take into account all international "A" matches for which results could be found. Ratings tend to converge on a team's true strength relative to its competitors after about 30 matches. Ratings for teams with fewer than 30 matches should be considered provisional. Match data are primarily from International Football 1872 - Present web site.
Basic calculation principles
The basic principle behind the Elo ratings is only in its simplest form similar to that of a league, unlike the FIFA tables who effectively run their table as a normal league table, but with weightings to take into account the other factors, the Elo system has its one formula which takes into account the factors mentioned above. There is no first step as in the FIFA system where a team immediately receives points for the result, there is just one calculation in the Elo system.The ratings are based on the following formulae:
or
Where;
= The new team rating |
|
= The old team rating |
|
= Weight index regarding the tournament of the match |
|
= A number from the index of goal differences |
|
= The result of the match |
|
= The expected result |
|
= Points Change |
|
Status of match
The status of the match is incorporated by the use of a weight constant. The weight is a constant regarding the "weight" or importance of a match, defined by which tournament the match is in, they are as follows;Tournament or Match type | Index (K) |
---|---|
World Cup Finals | 60 |
Continental Championship and Intercontinental Tournaments | 50 |
World Cup and Continental qualifiers and major tournaments | 40 |
All other tournaments | 30 |
Friendly Matches | 20 |
Number of goals
The number of goals is taken into account by use of a goal difference index. G is increased by half if a game is won by two goals, and if the game is won by three or more goals by a number decided through the appropriate calculation shown below;If the game is a draw or is won by one goal
If the game is won by two goals
If the game is won by three or more goals
- Where N is the goal difference
Table of examples:
Goal Difference | Coefficient of K (G) |
---|---|
0 | 1 |
1 | |
1.5 | |
1.75 | |
1.875 | |
2 | |
2.125 | |
2.25 | |
2.375 | |
2.5 | |
2.625 | |
Expected result of match
We is the expected result (win expectancy with a draw counting as 0.5) from the following formula:where dr equals the difference in ratings plus 100 points for a team playing at home.
So dr of 0 gives 0.5, of 120 gives 0.666 to the higher ranked team and 0.334 to the lower, and of 800 gives 0.99 to the higher ranked team and 0.01 to the lower.
Examples
The same examples have been used on the FIFA World RankingsFIFA World Rankings
The FIFA World Rankings is a ranking system for men's national teams in association football, currently led by Spain. The teams of the member nations of FIFA , football's world governing body, are ranked based on their game results with the most successful teams being ranked highest...
for a fair comparison. Some actual examples should help to make the methods of calculation clear. In this instance it is assumed that three teams of different strengths are involved in a small friendly tournament on neutral territory.
Before the tournament the three teams have the following point totals.
Team | Points |
---|---|
A | 630 |
B | 500 |
C | 480 |
Thus, team A is by some distance the highest ranked of the three:
The following table shows the points allocations based on three possible outcomes of the match between the strongest team A, and the somewhat weaker team B:
Example 1
Team A versus Team B (Team A stronger than Team B)Team A | Team B | Team A | Team B | Team A | Team B | |
Score | 3 : 1 | 1 : 3 | 2 : 2 | |||
---|---|---|---|---|---|---|
20 | 20 | 20 | 20 | 20 | 20 | |
1.5 | 1.5 | 1.5 | 1.5 | 1 | 1 | |
1 | 0 | 0 | 1 | 0.5 | 0.5 | |
0.679 | 0.321 | 0.679 | 0.321 | 0.679 | 0.321 | |
Total (P) | ||||||
Example 2
Team B versus Team C (both teams approximately the same strength)When the difference in strength between the two teams is less, so also will be the difference in points allocation. The following table illustrates how the points would be divided following the same results as above, but with two roughly equally ranked teams, B and C, being involved:
Team B | Team C | Team B | Team C | Team B | Team C | |
Score | 3 : 1 | 1 : 3 | 2 : 2 | |||
---|---|---|---|---|---|---|
20 | 20 | 20 | 20 | 20 | 20 | |
1.5 | 1.5 | 1.5 | 1.5 | 1 | 1 | |
1 | 0 | 0 | 1 | 0.5 | 0.5 | |
0.529 | 0.471 | 0.529 | 0.471 | 0.529 | 0.471 | |
Total (P) | ||||||
Note that Team B loses more ranking points by losing to Team C than by losing to Team A.
See also
- FIFA World RankingsFIFA World RankingsThe FIFA World Rankings is a ranking system for men's national teams in association football, currently led by Spain. The teams of the member nations of FIFA , football's world governing body, are ranked based on their game results with the most successful teams being ranked highest...
- FIFA Women's World RankingsFIFA Women's World RankingsThe FIFA Women's World Rankings for football were introduced in 2003, with the first rankings published in March of that year, as a follow-on to the existing FIFA World Rankings for men...
- Aggregated Football World Ranking-ListAggregated Football World Ranking-ListThe Aggregated Football World Ranking-List is an alternative Ranking-System for men's national teams in football . It consists of the sum of all ranks in 11 different Ranking-System for men's national teams in football: FIFA World Rankings, World Football Elo Ratings, The Roon Ba,...
- Elo rating systemElo rating systemThe Elo rating system is a method for calculating the relative skill levels of players in two-player games such as chess. It is named after its creator Arpad Elo, a Hungarian-born American physics professor....
- Unofficial World Champions (soccer)
- Strongest Football Nations by Elo RatingsStrongest football nations by Elo RatingsNational football teams can be ranked by their average Elo scores over time periods, following similar approaches in for example chess. The averages over time are calculated from the scores on the .-Strongest teams since the mid to late 1960s:...
- Statistical Soccer (Football) PredictionsStatistical Soccer (Football) PredictionsStatistical Football prediction is a method used in sports betting, to predict the outcome of Association football matches by means of statistical tools. The goal of statistical match prediction is to outperform the predictions of bookmakers, who use them to set odds on the outcome of football...