Mumbai, July 28: Naomi Osaka and coach Patrick Mouratoglou are done working together after less than a year, the four-time Grand Slam champion announced on social media. The news comes three days after Osaka lost her second match at the D.C. Open and just before she begins competing in Toronto. The U.S. Open, the year's last major tournament and an event Osaka won twice, begins in New York on Aug. 24. Alex de Minaur Wins Mubadala Citi DC Open 2025, Increases His ATP Tour Titles Wins to 10 After Thrilling Victory Over Alejandro Davidovich Fokina.

Osaka hired Mouratoglou — who was the longtime coach of Serena Williams — when she fired Wim Fissette shortly after her second-round exit at last year's U.S. Open. Osaka, a former No. 1, is currently ranked 51st and has a 21-11 record this season. She hasn't been past the third round at a Grand Slam tournament since winning the 2021 Australian Open.

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