Naomi Osaka came from one set down to defeat Karolina Muchova in the second round of the 2025 Australian Open.

At her peak, the four-time Grand Slam champion played her best tennis in the toughest moments. In Melbourne, she did it again.

A four-time Grand Slam champion, Osaka returned from maternity leave last year and lost in the first or second round of all four major tournaments. The 27-year-old Japan native has not won any event on the WTA Tour since capturing her second Australian Open title to start 2021.

Former Australian Open champion Naomi Osaka fought back from a set down Wednesday to reach the third round of a Grand Slam for the first time since the birth of her daughter in 2023, gaining a "little revenge" for defeat at the U.

Naomi Osaka defeated No. 20 Karolina Muchova 1-6, 6-1, 6-3 on Wednesday to reach the third round of a major for the first time since the 2022 Australian Open.

Third round action at the Australian Open sees two-time AO champion Naomi Osaka looking to post her best result at a Grand Slam since 2021, while Jessica Pegula continues her question to reach another Grand Slam title.

MELBOURNE–Naomi Osaka said she was enjoying a little bit of revenge against Karolina Muchova at the Australian Open 2025 on Wednesday, recalling how the Czech had ended her U.S. Open campaign last year when she was sporting her “best outfit ever”.