Naomi Osaka has parted company with coach Patrick Mouratoglou less than a year after the pair began working together, the four-times Grand Slam champion said days after her defeat to Emma Raducanu at the Washington Open.

Wiktorowski’s first work in the role for Osaka will come at the Canadian Open as Osaka gears up for the US Open next month. Osaka defeated Canadian Ariana Arseneault in the Round of 128 and will face No.

Naomi Osaka has announced the end of her association with Patrick Mouratoglou after less than a year of collaboration. The former world No. 1 decided to boost her career in late 2024 by hiring the former Serena Williams coach,