Naomi Osaka fought through an injury to defeat defending champion Suzan Lamens 7-6 (6), 3-6, 6-2 and advance to the quarterfinals of the Japan Open on Wednesday.

The No. 1 seed in her home-country tournament, Osaka was up 5-0 in the third set when she called for a medical timeout. After trainers heavily wrapped her left thigh, she returned to the court and dropped two games before defeating Lamens, of the Netherlands. Her movement was hampered, however.

Osaka was helped by her own nine aces and eight double faults by Lamens.

Also advancing to her fifth quarterfinal of 2025 was Sorana Cirstea of Romania, a 6-3, 6-1 winner over Katie Boulter of Great Britain. Olga Danilovic of Serbia defeated Ashlyn Krueger 6-4, 6-4 to move on.

Ningbo Open

No. 6 seed Belinda Bencic survived a late rally

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