The Sydney Roosters are an Australian professional rugby league

Rugby league

Rugby league football, usually called rugby league, is a full contact sport played by two teams of thirteen players on a rectangular grass field. One of the two codes of rugby football, it originated in England in 1895 by a split from Rugby Football Union over paying players...

 football club based in the Eastern Suburbs of Sydney

Eastern Suburbs (Sydney)

The Eastern Suburbs is a general term used to describe the metropolitan area directly to the east and south-east of the Sydney central business district in Sydney, New South Wales, Australia. Eastern Suburbs can refer to the suburbs within the local government areas of Woollahra, Waverley, Dover...

. The club competes in the National Rugby League

National Rugby League

The National Rugby League is the top league of professional rugby league football clubs in Australasia. The NRL's main competition, called the Telstra Premiership , is contested by sixteen teams, fifteen of which are based in Australia with one based in New Zealand...

 and is one of the oldest and most successful clubs in Australian rugby league

Rugby league in Australia

Rugby league football is one of the most popular sports in Australia. It is the dominant winter sport on the eastern seaboard of Australia, including the states of New South Wales and Queensland as well as the Australian Capital Territory, which together comprise around half of the country's...

 history, having won twelve New South Wales Rugby League

New South Wales Rugby League premiership

The New South Wales Rugby League premiership was the first rugby league football club competition established in Australia. Run by the New South Wales Rugby League from 1908 until 1994, the premiership was the state's and later the country's elite rugby league competition...

 and National Rugby League titles, and several other competitions. Only the South Sydney Rabbitohs

South Sydney Rabbitohs

The South Sydney Rabbitohs are an Australian professional rugby league football team based in Redfern, a suburb of South-central Sydney, New South Wales. They participate in the National Rugby League premiership and are one of nine existing teams from the state capital...

 and the St. George Dragons

St. George Dragons

The St George Dragons was an Australian Rugby league football club in St George, Sydney, New South Wales that played in Australia's top-level Rugby league competition from New South Wales Rugby Football League in 1921 until 1998; in 1999 they formed a joint venture with the Illawarra Steelers,...

 have won more premierships. The club holds the record for the longest winning streak,the most wins and the second greatest margin of victory in Australian rugby league history.