Jannik Sinner will face Novak Djokovic in a Wimbledon semi-final on Friday, and the Italian shares John McEnroe's view about his opponent

Novak Djokovic is more than a decade older than any other man in the Wimbledon semifinals. He says it motivates him to see if he can keep going toe-to-toe against the younger players at the top of tennis these days.

Novak Djokovic made the ominous decision to call off his afternoon practice session at Wimbledon on Thursday following a ‘nasty’ fall. The Serbian is set to face Jannik Sinner in the semi-finals on Friday after he slid and fell in his Wednesday’s quarter-final win over Flavio Cobolli.