Naomi Osaka, a two-time champion in Australia, stopped playing because of a strained abdominal muscle after dropping the first set of her match against Tokyo Olympics gold medalist Belinda Bencic.

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

It's an up-and-down day for favorites and the husband-and-wife duo of Gaël Monfils and Elina Svitolina wo their singles matches.

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

Sinner moved into the fourth round of the Australian Open with a fairly routine 6-3 6-4 6-2 victory over American Marcos Giron in just over two hours on Saturday night. The world No. 1 wasn’t at his brilliant best, but he was still far too strong for Giron as he reached the last 16 of the grand slam tournament he won last year.

Jannik Sinner has started his Australian Open title defense with a challenging win over No. 35-ranked Nicolas Jarry.

When Carlos Alcaraz is on court for a training session, perhaps working on his newly revamped service motion, he’s doing so to buttress a game already good enough to claim four Grand Slam titles

Italy's Jannik Sinner returns the ball to Netherlands' Tallon Griekspoor during the Davis Cup final tennis match between Netherlands and Italy at the Martin Carpena Sports Hall in Malaga, southern Spain, Sunday, Nov. 24, 2024. Credit: AP/Manu Fernandez

In a new Daily Dose of Social Media, we explore the behind-the-scenes moments of Gael Monfils and Elina Svitolina supporting each other after achieving big upsets against the World No. 4 players,

The 2025 Australian Open runs from January 12-26. Tennis fans can follow Sports Illustrated's Serve on SI for all the most important news from the sport.

The 23-year-old from Sesto Pusteria prevailed in three sets and will face Holger Rune on Monday for a place in the quarterfinals. The young Dane may be his most dangerous threat heading into the final, especially after Taylor Fritz's shocking elimination against Gael Monfils.