MELBOURNE—Novak Djokovic retired injured after losing the opening set of his clash with Alexander Zverev on Friday, sending the German to a first Australian Open final where he will take on defending champion Jannik Sinner for a maiden Grand Slam title.
Sinner later overcame cramp to book an intriguing battle for the Norman Brookes Challenge Cup by beating American Ben Shelton 7–6(2), 6–2, 6–2 to reach his second successive final in Melbourne and third at hardcourt majors after his U.S. Open triumph.
