Investigations into game-fixing allegations involving some of the country’s top clubs has resulted in a one-month delay to the start of the 2011-12 season, now slated to kick off Sept. 9.

A Turkish court has already jailed pending trial 31 people, including the chairman of champion Fenerbahce and the coach and deputy chairman of Besiktas on charges of game-fixing.

The Turkish Cup final between Besiktas and IBB (Istanbul Buyuksehir Belediyespor) is reportedly one of 19 games highlighted in the police investigation. Besiktas won the final 4-3 on penalties to win a place in next season’s Europa League.

Another game under scrutiny, according to reports, was Fenerbahce’s 4-3 victory over Sivasspor that clinched the title on the final day of the season to secure a place in the lucrative Champions League.