Wikipedia
The S.League is a Singaporean professional league for men's association football clubs. At the highest level of domestic football competition in Singapore, it is the country's primary football competition. Contested by nine clubs, it consists of three rounds in which each team plays every other team once. Clubs from Brunei, China, France, Japan and Korea have been invited to take part in the league to raise its level of competitiveness and profile.
The S.League is run by the Football Association of Singapore. Seasons run from February to October, with teams playing 24 matches each, totalling 108 matches in the season. It is currently sponsored by Great Eastern Life and YEO'S, and thus officially known as the Great Eastern YEO'S S.League for sponsorship reasons.
Since the inception of S.League in 1996, a total of 6 clubs have been crowned champions. Warriors have been the most successful club with 9 titles, followed by Tampines Rovers (5), Geylang International (2) and Home United (2). Étoile (1) became the first foreign club to win the competition in 2010. The current champions are Brunei DPMM, who won the title in the 2015 season.