Defending champion Jannik Sinner continued his sizzling Australian Open run with a victory over American Ben Shelton.

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.

Defending champion Jannik Sinner continued his sizzling Australian Open run with a 7-6(2) 6-2 6-2 win over American 21st seed Ben Shelton to reach a second straight final at Melbourne Park and book a meeting with Alexander Zverev.

Sabelenka will face 19th seed Madison Keys for the Daphne Akhurst Memorial Cup, with the American having produced one of the shocks of the tournament to beat Iga Swiatek in a final-set tiebreak to secure a dramatic 5-7, 6-1, 7-6 (10-8) victory.

The Madison Keys who will play two-time defending champion Aryna Sabalenka for the title at the Australian Open on Saturday night is not the same Madison Keys who was the runner-up at the U.S.

By Ian Ransom MELBOURNE (Reuters) -Double defending champion Aryna Sabalenka overwhelmed Paula Badosa 6-4 6-2 with a impressive display of raw power to reach her third successive Australian Open final on Thursday.