The I-League is the number one football league in India. The league was started in 2006 after the old National Football League folded. Dempo have one the league the most times as they have one it twice in 2008 and 2010. The current reigning champions are Mohun Bagan.
The first game was played on 24 November 2007 between Dempo Sports Club and Salgaocar Sports Club. The introduction of the I-league seeks to change the way Indian clubs approach football. All club were required to have at least 14 professionals on their books and the introduction of an U19 development team.
After an exciting 18 rounds, Dempo Sports Club won the championship on goal difference with Churchill finishing runners-up. Viva Kerala and Salgaocar Sports Club were both relegated and will play next season in the second division.
Following an AFC review of the I League's progress, the champions of the I-League had been awarded a spot in the prestigious AFC Champions League club championships in 2009.
Then the next season during the 2008–09 season after a successful first season for the I-League, the second season featured 12 teams from four different cities. And for the first time, the champions of the league would qualify for the AFC Champions League while the runners-up qualify for the AFC Cup club championships in 2010. The bottom two teams will be relegated to the I-League 2nd Division in the next season.
The I-League 2008–2009 season ran from 26 September 2008 and went on until 15 April 2009 with a break in December for the Federation Cup and Durand Cup. Most games this season were played on Saturday's and Sunday's to attract a larger crowd.