Osaka, a four-time Grand Slam champion, has been in a career rut for years. Mouratoglou joined her staff in September of 2024 and there hasn't been much improvement. Osaka has not made it past the third round of a Grand Slam tournament since 2021 when she won the Australian Open. Now she will look for a new coach to help bring her back to form.

Osaka is coming off a disappointing loss to Emma Raducanu in D.C., and, at No. 51, is still not close to her Slam-winning form of the past. And the Canadian fans should help. But Arseneault may need a lot of more of it than they can muster.

The Post Maria Sakkari 'massively respects' Naomi Osaka: Not many Slam champs would do that appeared first on Tennis World USA Maria Sakkari is applauding Naomi Osaka's decision to play a WTA 125 (Challenger) tournament and reveals she privately approached the four-time Grand Slam champion to tell her how much she respected her move.

Raducanu is also through to the semi-finals of the women’s doubles. The Briton and Elena Rybakina beat Giuliana Olmos and Aldila Sutjiadi 7-6, 6-4 to set up a last-four clash with second seeds Shuai Zhang and Taylor Townsend.