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.

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.