Ben Shelton has reached his first Australian Open semifinal by defeating Lorenzo Sonego 6-4, 7-5, 4-6, 7-6 in an entertaining match.

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 overcame an early test against American Ben Shelton to reach his second straight Australian Open final, winning 7-6 (2), 6-2, 6-2.