Naomi Osaka is reportedly set to work with Tomasz Wiktorowski, the former coach of Iga Swiatek. The four-time Major winner announced her sudden split from Patrick Mouratoglou on Sunday, days after Emma Raducanu beat her in the second round of the WTA 500 in Washington.

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.

Naomi Osaka has ended her 10-month coaching partnership with Patrick Mouratoglou, a French coach of Greek descent, after inconsistent results. The four-time Grand Slam champion announced the split on Instagram,