Jannik Sinner reveals secret Wimbledon bet that could keep Darren Cahill in his team

Jannik Sinner’s Wimbledon title might mean he will be able to keep Darren Cahill around as one of his coaches beyond this season, all thanks to a friendly wager they made before Sunday’s final at the All England Club.

Back in January, while Sinner was on his way to winning the Australian Open, it…