Before the beginning of the 1974–75 season, the number of teams were increased from twelve to 16 teams. Esteghlal claimed its first Takht Jamshid Cup title after winning the league ahead of Persepolis. The 1975–76 Takht Jamshid Cup was won by Persepolis with a great performance by Iranian football legend Ali Parvin. The second place team was another Tehran based club, Homa. The next two seasons were won by PAS Tehran under coach Hassan Habibi. PAS Tehran won their championships both times ahead of Persepolis. At this time the Takht Jamshid Cup was one of the strongest football leagues in Asia. The Iran national football team won in 1976 their third successive AFC Asian Cup and qualified 1978 for the FIFA World Cup for the first time in the country's history.