MELBOURNE - 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.

World No. 1 Jannik Sinner, the defending champion, faces a much more favorable path in the early rounds than his rivals Novak Djokovic and Carlos Alcaraz. This promising draw could give Sinner a solid foundation to defend his title,

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