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

Follow live text and radio commentary featuring Emma Raducanu, Iga Swiatek, Jannik Sinner in the Australian Open in Melbourne, Australia.

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.

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.

Jannik Sinner advanced to the Australian Open's fourth round by defeating American Marcos Giron 6-3, 6-4, 6-2. Despite struggles returning Giron's serve and committing 37 unforced errors, Sinner prevailed,

In their Davis Cup debuts, Marcos Giron and Alex Michelsen each scored straight-sets singles wins to lift the USA to a 2-0 lead over Chinese Taipei. Photo credit: Atsushi Tomura/Getty for ITF. U.S. teammates Alex Michelsen and Marcos Giron delivered powerful premiere performances.

World number one Jannik Sinner continues his Australian Open title defence against Marcos Giron in the third round - follow live.

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.

Day seven of the Australian Open saw a series of thrilling matches and surprising upsets. Holger Rune battled through a five-set match against Miomir Kecmanovic. Madison Keys defeated Danielle Collins despite Collins facing a knee injury.

World number one Jannik Sinner advanced to the Australian Open last 16, defeating American Marcos Giron in straight sets in Melbourne. Ruthless Sinner