Jannik Sinner (No. 1 ranking) will take on Marcos Giron (No. 46) in the Round of 32 of the Australian Open on Friday, January 17.Sinner earned a four-set victory over Tristan Schoolkate (4-6, 6-4,

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.

World number one Jannik Sinner has now claimed 64 match wins at the majors, which moves him clear of Andreas Seppi (63) for the outright second most of any Italian in the Open Era, behind only Fabio F

Sinner faces Holger Rune in the fourth round of the Australian Open at 10:00 p.m. EST tonight. Fans can expect to see him wear his Snoopy-ish night outfit. Tennis fans can follow Sports Illustrated's Serve on SI for all the most important news from the sport.

Jannik Sinner is fully focused on his run at the 2025 Australian Open, where he reached the third round by losing a set after 102 days. The world number 1 wants to gradually raise his level over the course of the tournament to be ready in the second week and try to defend the title won here in 2024.

Jannik Sinner notched his 10th consecutive win at the Australian Open, and made it 17 straight hard court wins at the majors. Photo Source: Getty Jannik Sinner found himself in a tight spot at the end of the first set with Marcos Giron on Saturday night in Rod Laver Arena.

The sound of more than 14,000 tennis fans cheering his name did not make Rotorua 9-year-old Grayson Verran nervous when he performed the coin toss at Melbourne’s Rod Laver Arena during the Australian Open.

While the action in Melbourne is over, the results are still being felt. On Monday, the ATP Rankings saw a realignment after the Australian Open. Below is a breakdown of what fans must know about the ATP Rankings as of January 27, 2025.

Jannik Sinner's CAS hearing is scheduled for April 16-17, and if the decision goes against him, he could receive a ban of up to two years.

There were few doubts about Jannik Sinner's status as the favourite in the Australian Open final, following an incredible past year and as the defending champion.

Defending Australian Open champion Jannik Sinner topped Alexander Zverev in straight sets, 6-3, 7-6, 5-3 in the 2025 Australian Open final, cementing his third career Grand Slam title.