Injury forces Lorenzo Musetti to retire, sending Novak Djokovic to Australian Open semis

MELBOURNE, Australia — Novak Djokovic will play in his 13th Australian Open semifinal after his quarterfinal opponent, Lorenzo Musetti, retired from their match Wednesday night while leading the 24-time major champion two sets to none.

Musetti, the No. 5 seed at Melbourne Park, led Djokovic 6-4, 6-3, 1-2 when he called for the physiotherapist to attend to an apparent right quadricep strain.

Jakub Mensik withdrew from the tournament, citing an abdominal strain.

Djokovic will face the winner of Wednesday’s last men’s quarterfinal between world No. 2 Jannik Sinner and American Ben Shelton.