Japan's Naomi Osaka, a four-time Grand Slam singles champion, will work with Polish coach Tomasz Wiktorowski on a trial basis ...

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

Tomasz Wiktorowski is back in the coaching game, and it’s already paying off for Naomi Osaka. After a highly successful run ...

Naomi Osaka reveals she initially thought Tomasz Wiktorowski was "stern," but now sees him as a funny person and also someone ...

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

Naomi Osaka and Patrick Mouratoglou have parted ways after less than a year of working together, and the four-time Grand Slam ...

Naomi Osaka didn't wait too long to add a new name to her coaching staff as the current world No. 49 is set to be assisted by ...

The former No. 1 has been seen practicing with Iga Swiatek's previous coach, after parting ways with Patrick Mouratoglou on Sunday.

Naomi Osaka, the four-time Grand Slam champion, has ended her partnership with coach Patrick Mouratoglou after less than a year. She's now trialing wi ...

There, Osaka produced another big win, as Wiktorowski achieved something he had failed to do during his four-year stint as ...

Four-time Grand Slam champion Naomi Osaka is set to team up with Tomasz Wiktorowski, who previously coached world No. 1 Iga ...