The Naomi Osaka comeback tour continued on Monday, as the world No. 24 tennis star took down No. 3 Coco Gauff 6-3, 6-2 in the pair's Round of 16 match at the 2025 US Open — booking her first Grand Slam quarterfinal since 2021 in the process.
"I'm a little sensitive and I don't want to cry, but honestly, I just had so much fun out here," Osaka said following the upset victory. "I was in the stands like two months after I gave birth to my daughter, watching Coco. I just really wanted an opportunity to come out here and play."
Already a two-time US Open champion, Osaka has been eyeing a deep tournament run since returning from maternity leave in January 2024 — and she managed to take advantage of Gauff's fluctuating form to achieve her goal.
"It's disappointing," Gauff said after Monday's loss. "For sure it was not the level that I wanted to bring, but it is a step in the right direction, I feel. I maybe was a little bit empty — she forced me to earn every point out there today."
Japan's four-time Grand Slam winner will next face No. 13 Karolína Muchová in a Wednesday quarterfinal, with Osaka most recently ousting the Czechia national from the 2025 Australian Open's Round of 64.
How to watch the US Open quarterfinals
The 2025 US Open quarterfinals kicked off on Tuesday, with US star and world No. 4 Jessica Pegula booking her second straight semifinals berth at the New York Slam by defeating Czechia's No. 62 Barbora Krejčíková in straight sets.
The quarterfinals will continue when defending champion No. 1 Aryna Sabalenka faces another Czech contender, No. 60 Markéta Vondroušová, at 7 PM ET on Tuesday.
Wednesday will cap the round, with Osaka battling Muchová and Poland's No. 2 Iga Świątek taking on No. 9 US star Amanda Anisimova in a rematch of the 2025 Wimbledon final.
Live coverage of the 2025 US Open airs across ESPN platforms.