SportsLine's Jose Onorato reveals his picks for the 2025 Wimbledon men's semifinal of Jannik Sinner vs. Novak Djokovic on Friday

Every other day at Wimbledon has brought an opportunity to compare the greatest player in men's tennis and one of his heirs.

After taking what Novak Djokovic called "a nasty fall" Wednesday in the final moments of a Wimbledon quarterfinal victory over No. 22 seed Flavio Cobolli, the 38-year-old Serbian star canceled his afternoon practice session Thursday.

SportsLine tennis expert Jose Onorato reveals his 2025 Wimbledon picks for Wednesday's men's singles quarterfinal between Novak Djokovic and Flavio Cobolli

The Wimbledon men's singles semi-finals take place at the All England Club on Friday. If ever a Grand Slam semi-final involving Spain's Carlos Alcaraz could be described as a warm-up act that could be a fair description of his clash with American Taylor Fritz in the opening match on Centre Court.

The 38-year-old overcame a first-set loss to take a 6-7, 6-2, 7-5, 6-4 victory over Italian Flavio Cobolli to advance to the semifinals for the 14th time at the All England Lawn Tennis & Croquet Club. Djokovic has now reached the final four at Wimbledon more than any other men's tennis player, surpassing Roger Federer on Wednesday.

Serb levels match with youngster as Sinner overcomes injury - Jannik Sinner overcame an elbow issue to win his Ben Shelton tie, while Djokovic goes up against 23-year-old Cobolli

Nick Kyrgios has issued a warning to Novak Djokovic amid rumours the tennis great is set to retire after this year's Wimbledon. The Serb is hoping to beat off competition from Carlos Alcaraz and Jannik Sinner for the singles title,