Defending champion Jannik Sinner’s consecutive-sets streak has ended in the second round of the Australian Open.

Defending champ Jannik Sinner drops set for first time since October, but rallies for win; American Danielle Collins plays villain while advancing.

Jannik Sinner has announced that he will part ways with his coach Darren Cahill at the end of the season. The Australian, who joined Sinner's team in July 2022, will conclude the 2025 campaign before stepping back from full-time tennis.

Virginia tennis alum Danielle Collins made headlines on Thursday at the 2025 Australian Open, but not as a result of her tennis performance in a 7-6, 4-6, 6-2 v

Danielle Collins has gotten into a back-and-forth with a booing crowd at the Australian Open after eliminating a local player