The defending champion quickly dismissed the home favorite, entertaining the crowd with a lengthy post-match interview before taking on Ben Shelton.

Defending Australian Open champion Jannik Sinner has returned to the quarterfinals, navigating an illness and multiple delays during a 6-3, 3-6, 6-3, 6-2 win over No. 13 seed Holger Rune.

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 ...

Jannik Sinner and Iga Swiatek were both subject to doping cases last year, which has overshadowed their participation at the Australian Open.