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

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

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.

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

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 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 the Australian Open Round of 16 on Sunday, No. 1-ranked Jannik Sinner takes on No. 13 Holger Vitus Nodskov Rune.Sinner enters the Round of 16 after his three-set win on Saturday over Marcos

Giron gave him a different look, stood further back to receive that second serve to make the server do something a little extra with the ball. Jannik Sinner pounces on Marcos Giron's weaker second ...

MELBOURNE, Australia — 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 ...

Defending champion Jannik Sinner has defeated 46th-ranked Marcos Giron of the U.S. 6-3, 6-4, 6-2 at the Australian Open Credit: AP Credit: AP MELBOURNE, Australia (AP) — Defending champion ...

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Alex Michelsen gave the United States a 2-0 lead over Taiwan on his Davis Cup debut in the first round qualifiers on Friday, while Jacob Fearnley also impressed in his first appearance in the competition to pull Britain level with Japan.