Jessica Pegula, the two-time defending champion at the National Bank Open, was upset 3-6, 6-4, 6-1 by Anastasija Sevastova, ...

The four-time major champion announced that she had parted ways with coach Patrick Mouratoglou following middling results.

Osaka's time with Mouratologou followed an up-and-down sequence of promising signs and frustrations with either injury or ...

So far, the early results are promising for the budding partnership between Osaka and Wiktorowski. Osaka defeated Ariana ...

Osaka, a four-time Grand Slam champion, has been in a career rut for years. Mouratoglou joined her staff in September of 2024 ...

The news comes after Naomi Osaka lost her second match at the D.C. Open and just before she begins competing in Toronto.

Highlights from Naomi Osaka's dominant win over Jelena Ostapenko on Friday to advance to the Round of 16 in Montreal.

Naomi Osaka and coach Patrick Mouratoglou are done working together after less than a year, the four-time Grand Slam champion ...

Unseeded Naomi Osaka looked strong against her seeded opponent and could now face world No 4 Jessica Pegula in the next round ...

Naomi Osaka stormed into the fourth round of the Omnium Banque Nationale, knocking out former Roland Garros champion Jelena Ostapenko, 6-2, 6-4.

Naomi Osaka secured a 6-2, 6-4 victory over Jelena Ostapenko in a battle of Grand Slam champions in the third round of the ...

Naomi Osaka was on the brink of defeat at the Canadian Open, but she saved two match points to pull off an incredible ...