Jannik Sinner defended Novak Djokovic's decision to retire during his semifinal match at the 2025 Australian Open.

An ailing leg leads to an abrupt finish for the 24-time major winner, who’s a 10-time winner in Melbourne.

Djokovic is out of the Australian Open after retiring from his semi-final, with Zverev through to face Sinner on Sunday

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.

The semifinals are scheduled to start at 10:30 p.m. EST and will be broadcast on ESPN and ESPN Deportes. Fans looking to watch can do so for free through FuboTV, which offers a free trial and $30 off your first month, or DirecTV Stream, which offers a free trial. SlingTV doesn’t offer a free trial but does have other promotional offers available.

Defending champion Jannik Sinner beats American 21st seed Ben Shelton in straight sets, setting up a clash with Alexander Zverev in the Australian Open final.

Novak Djokovic left Rod Laver Arena to boos after dramatically pulling the plug on his Australian Open campaign a set into his semi-final against Alexander Zverev.

The win sets up a showdown with Alexander Zverev of Germany in Sunday’s final. Earlier Friday, Zverev won the first set of his semifinal when Novak Djokovic missed a putaway volley in a tiebreak. Djokovic retired on the spot, unable to overcome the muscle tear he suffered in his quarterfinal win over Carlos Alcaraz Tuesday night.

The top two seeds clash in the final as defending champion Sinner goes for back-to-back Australian Open titles

After a thrilling fortnight of tennis at the Australian Open, just two men are still in contention at Melbourne Park. Jannik Sinner will be seeking to complete the defence of the title he won a year ago,