In Australian rules football

Australian rules football

Australian rules football, officially known as Australian football, also called football, Aussie rules or footy is a sport played between two teams of 22 players on either...

, the 50-metre arc (or simply called the fifty) is one of the arcs that exist at each end of the ground, 50m from the goal line. On AFL

Australian Football League

The Australian Football League is both the governing body and the major professional competition in the sport of Australian rules football...

 grounds, the arcs are coloured (blue at one end, and red at the other) with a thinner white edge, and are broken twice at the flanks with a number 50 pained in each gap; on suburban grounds, the arcs are simply white and unlabelled, and are often only 40 or 45 metres from goal.

The 50-metre arc was introduced from the WAFL to the VFL during the 1980s, in order to give players, umpires and spectators a better idea of the distance from goal. It gives an indication of the average distance from which most players would be capable of scoring. When introduced, each 50-metre arc was coupled with a smaller, 25-metre arc. However, all players are capable of kicking well over 25 metres; as such, the arcs provided no benefit to spectators, and they quickly disappeared from grounds.

The arcs obtained significance for the first time in Wizard Cup

Australian Football League pre-season competition

The Australian Football League pre-season competition, which is known at present as the NAB Cup, is a competition held before the beginning of the Australian Football League premiership season...

 competitions in 2003, with two relevant rule changes. Firstly, a goal scored from outside the arc (known as a "super goal

Super Goal

A Super Goal is an innovation used in the Australian Football League's pre-season competition in the sport of Australian rules football.The Super Goal was introduced before the 2003 Wizard Cup, and is awarded nine points instead of the regulation six. For a goal on the run to be considered a Super...

") was worth 9 points, rather than the usual 6 points. To claim the supergoal, the kicker must be completely behind the arc; this has led to some contentious judgement calls when the player kicks from on top of the painted 50, where the arc is broken.

The second rule stated that a mark taken from a backwards kick would be called play-on, unless taken within the 50-metre arc. This rule was introduced into regular-season VFL

Victorian Football League

The Victorian Football League which evolved from the former Victorian Football Association , taking its new name as from the 1996 season, is the premier Australian rules football league in Victoria The Victorian Football League (VFL) which evolved from the former Victorian Football Association...

 for the 2006 season, with the intention of trialling it as a possible remedy to the so-called "chip-chip" style of play. Whether or not it will be adopted into the AFL

Australian Football League

The Australian Football League is both the governing body and the major professional competition in the sport of Australian rules football...

 in this form remains to be seen; in the 2007 NAB Cup and VFL

Victorian Football League

The Victorian Football League which evolved from the former Victorian Football Association , taking its new name as from the 1996 season, is the premier Australian rules football league in Victoria The Victorian Football League (VFL) which evolved from the former Victorian Football Association...

, the same rule was trialled at the halfway point of the ground instead of the 50-metre arc.

In 2005, the length of the centre square was increased from 45m to 50m; as a result, the 50-metre arcs intersected the centre square at the notoriously small Sydney Cricket Ground

Sydney Cricket Ground

The Sydney Cricket Ground is a sports stadium in Sydney in Australia. It is used for Australian football, Test cricket, One Day International cricket, some rugby league and rugby union matches and is the home ground for the New South Wales Blues cricket team and the Sydney Swans of the Australian...

. To remedy the situation, the curators painted 45-metre arcs instead of 50-metre arcs. After statisticians argued that the inside-50 statistic could no longer be accurately collected, the 50-metre arcs were reinstated; the portions of the arcs that overlap the centre square are not painted onto the field. Since the construction of the Victor Trumper Stand the playing surface SCG has been lengthened by 5 metres, permanently resolving the situation.

Goals kicked from outside or on the 50-metre arc are seen as big kicks. Fifty metres is the typical upper limit that most players can consistently kick. A player taking a set shot from within the 50-metre is expected to have a good chance of scoring a goal, while a player who mark

Mark (Australian football)

A mark is a skill in Australian rules football where a player cleanly catches a kicked ball that has travelled more than 15 metres without anyone else touching it or the ball hitting the ground....

s outside the arc may try to pass the ball to a teammate who is closer to goal.