Defending champion Jannik Sinner has defeated 46th-ranked Marcos Giron of the U.S. 6-3, 6-4, 6-2 at the Australian Open.

Defending champion Jannik Sinner was not at his fluent best but still had too much firepower for unseeded American Marcos Giron as he sealed a 6-3 6-4 6-2 win and reached the fourth round of the Australian Open on Saturday.

Jannik Sinner returns to the court at the Australian Open to face American Marcos Giron, ranked 46th in the world. After a comeback against Tristan Schoolkate, the South Tyrolean will compete in