1999–2000 National Football League (India)
The 1999–2000 National Football League, also known as the Coca-Cola National Football League for sponsorship reasons, was the fourth season of National Football League, the top Indian league for association football clubs, since its inception in 1996.
Indian Super League
Unlike most football leagues around the world, the Indian Super League does not use promotion and relegation, instead choosing to grow the league through expansion, similar to Major League Soccer in the United States. During the league's first four seasons, two teams have been crowned champions, both winning twice each. ATK won the first title in 2014 before winning their second title in 2016. Chennaiyin are the other club to be crowned as champions, having done so in both 2015 and 2018.