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

Osaka has won only one title while collaborating with Mouratoglou – more precisely the Saint-Malo WTA 125 – really too little ...

Former Wimbledon champion and famous tennis coach Goran Ivanisevic has hit back at Patrick Mouratoglou for criticising him ...

A war of words has erupted between top tennis coaches Goran Ivanisevic and Patrick Mouratoglou over Stefanos Tsitsipas.

"This has been a relationship of less than a year. Osaka has won a fair amount of matches, but not at the biggest and best ...

"I better not say what I think about him... If I go to Toronto or Cincinnati, I'm most excited to see Mouratoglou." ...

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 ...

Wimbledon champion Iga Swiatek cruised, Naomi Osaka battled through and Canadian Eugenie Bouchard called time on her WTA ...

Naomi Osaka secured a second-round win at the Toronto Masters under her new coach, Tomasz Wiktorowski — the Polish tactician ...

British number two Cameron Norrie is out of the Canadian Open after a second-round defeat by world number 99 Aleksandar Vukic ...

Wimbledon champion Iga Swiatek's untroubled tournament opener followed Naomi Osaka's battling victory over Liudmila Samsonova ...