replaced with I-League and I-League 2nd Division respectively. I-League 2nd division (2007–2022) The National Football League's second division was succeeded by the I-League second division in 2008. The State FAs nominated top teams from their respective State leagues to AIFF who then selected the clubs based on criteria. The number of clubs in this league varied each season. Since 2017–18 season, the league saw introduction of I-League reserve sides which weren't eligible for promotion since I-League was then the top division. After I-League lost its top tier status, I-League 2nd division too was demoted to third tier, re-establishing India's third tier since NFL's Third Division in 2006. I-League (2022–present) Starting from the 2022–23 season, I-League lost its top-tier status. The champions of the 2022–23 I-League were promoted to the ISL with no participation fee. In its recommendation for 2024–25, it was agreed to fully implement promotion and relegation between the two leagues. Level III NFL Third Division (2006) Ten years after the formation of NFL, a third division was briefly introduced for one season in 2006 The NFL Third Division was the first third division tier football league in India to be organized on a national scale. The league was played from 25 November till 18 December 2006 as a promotional tournament for Indian National Football League Second Division. Five teams were promoted to the second division. Starting from the 2022–23 season, I-League 2 filled the void in the third tier left by NFL Third Division in 2006. I-League 2 (2022–present) After demoting I-League to the second tier status in Indian football, its second division i.e., I-League 2nd Division was subsequently demoted to third tier. AIFF renamed the 2nd Division to I-league 2 to avoid disambiguation. Level IV Indian State Leagues There are currently total of 37 state associations (including union territories) affiliated with the AIFF. These state associations have state leagues affiliated to them. The top teams of state leagues are eligible to apply for the I-League 2. Some state leagues have multiple divisions and a promotion/relegation system between these divisions. Calcutta Football League in West Bengal is the oldest state league and has the highest number of divisions (seven) with promotion/relegation system in place. Cups Federation Cup Federation Cup (abbreviated as Fed cup) is an annual knockout style club football tournament in India. It has started in 1977. From its inception till I-League has been started in 1997