Jannik Sinner will take on Novak Djokovic in the Wimbledon semi-finals on Friday, and the world No. 1 has defended his opponent, who often comes under fire for his on-court behaviour

John McEnroe questioned Wimbledon ’s decision not to allow more time between the men’s semi-finals after Novak Djokovic ’s match against Jannik Sinner began in a half-empty Centre Court. Two-time defending champion Carlos Alcaraz wrapped up his 6-4 5-7 6-3 7-6 win over Taylor Fritz shortly before 4.30pm.

John McEnroe believes Novak Djokovic is capable of beating Jannik Sinner at Wimbledon this afternoon, despite 'uncertainty' surrounding the Serb. Djokovic has been in fine form at the All England Club this summer,