Naomi Osaka's second-round match at the Australian Open could not possibly have started in a worse way. All of 21 minutes in, she sailed a forehand service return well long and, just like that, trailed 5-0.

Naomi Osaka, ranked just No. 51 in the world after a disappointing 2024 season, shook off a slow start en route to a second-round upset win in the Australian Open on Wednesday. Osaka rallied past 20th-seeded Karolina Muchova 1-6,

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.

Naomi Osaka beat Karolina Muchova 1-6, 6-1, 6-3 at the Australian Open, reaching the third round at a Grand Slam for the first time since her return from maternity leave.