U.S. Open 2025: Osaka dominates Gauff, Auger-Aliassime ends Rublev’s run in straight sets

NEW YORK — Naomi Osaka and Felix Auger-Aliassime lit up Arthur Ashe Stadium on Labour Day, storming into the U.S. Open quarter-finals with commanding upsets that marked career resurgences on tennis’s biggest stage.

Osaka crushes Gauff in 64-minute masterclass

Four-time Grand Slam champion Naomi Osaka looked back to her dominant best, dismantling third seed Coco Gauff 6-3, 6-2 to reach her first Flushing Meadows quarter-final since 2020. Osaka’s mix of precision serving and fearless baseline hitting overwhelmed Gauff, who struggled with unforced errors despite serving well.

"I'm a little sensitive. I don't want to cry. I had so much fun out here," Osaka said, thanking her team for standing by her during difficult years away from the top.

Auger-Aliassime ends Rublev’s run with calm efficiency

Canada’s Felix Auger-Aliassime delivered an equally powerful statement, ousting 15th seed Andrey Rublev 7-5, 6-3, 6-4 to reach his first Grand Slam quarter-final since the 2022 Australian Open. The 25th seed credited a calmer mindset for helping him navigate pressure moments after battling injuries and confidence dips.

“Today is my first time playing Arthur Ashe in a few years. It feels even better than the first time,” Auger-Aliassime said. “To come back here for the second time, it feels more deserved.”

Swiatek marches on; night session heats up

World No. 1 Iga Swiatek maintained her stellar 2025 season with a clinical 6-3, 6-1 win over 13th seed Ekaterina Alexandrova in just 64 minutes. The 24-year-old became the youngest woman since Maria Sharapova in 2005 to reach quarter-finals at all four majors in a single year.

Later tonight, defending champion Jannik Sinner faces 23rd seed Alexander Bublik, seeking his eighth straight Slam quarter-final, while Amanda Anisimova meets Beatriz Haddad Maia in a battle of seeded contenders.

Doubles magic for Venus Williams and Leylah Fernandez

In a feel-good close to the day session, Venus Williams and Leylah Fernandez continued their surprise doubles run, defeating Ekaterina Alexandrova and Zhang Shuai 6-3, 6-4 on Louis Armstrong Stadium by converting four of five break points.

Quarter-final matchups ahead

♦ Naomi Osaka vs. Karolina Muchova (11th seed)

♦ Felix Auger-Aliassime vs. Alex de Minaur (8th seed)

Both Osaka and Auger-Aliassime credited mental resilience and renewed focus for their breakthrough wins, with Osaka aiming to “stay grateful and have fun” and Auger-Aliassime emphasizing a “calm head in big pressure moments.”