In a stunning development at the Australian Open, Novak Djokovic withdrew because of injury after losing the first set of his semifinal match versus Alexander Zverev.
Zverev, the No. 2 seed, won a grueling first set in a 7–6 tiebreaker that lasted one hour and 26 minutes. No. 7 Djokovic decided he couldn't continue with a left leg injury that was hindering him throughout the match. The 10-time Australian Open champion revealed afterward that the injury was a muscle tear.
Zverev will face defending Australian Open champion and No. 1 seed Jannik Sinner, who beat American Ben Shelton 7-6 (2), 6-2, 6-2, in Sunday's final.