Indian Super League
Football in India has existed in many forms since the game first arrived in the country during the 19th century with the first nationwide club competition, the Durand Cup, being founded in 1888. Despite India's early history in the game, the country's first nationwide football league did not begin until the semi-professional National Football League commenced in 1996. Prior to the creation of the National Football League, most clubs played in state leagues or select nationwide tournaments.
Calcutta Football League
The Calcutta Football League (CFL) is a men's professional football league in Bengal. For sponsorship reasons, the league is officially known as the Officer's Choice Blue Calcutta Premier League. One of the top football leagues in the state. League system where several football clubs of the Indian city of Kolkata (Calcutta) participate. It currently consists of seven-tier pyramid system.