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.

Defending champion Jannik Sinner beat 46th-ranked Marcos Giron of the U.S. 6-3, 6-4, 6-2 at the Australian Open on Saturday night, reaching the fourth round at Melbourne Park for the fourth time. Sinner stretched his unbeaten run to 17 matches,

Ruthless defending champion Jannik Sinner was in the zone Saturday as he powered into the last 16 of the Australian Open with a straight-sets thrashing of American Marcos Giron. The American, who was bidding to reach the last 16 at a Grand Slam for the first time,

World no. 1 Jannik Sinner extended his winning streak at hard-court Majors. The Italian faced Marcos Giron in the third round of the Australian Open at Rod Laver Arena and scored a 6-3, 6-4, 6-2 in two hours and one minutes.