Naomi Osaka

Naomi Osaka stumbled badly in her first match since winning the Australian Open as the world No 1 went down in a flurry of errors to exit the Dubai Championships on Tuesday.

World number one Naomi Osaka has split with her coach Sascha Bajin 16 days after winning the Australian Open.The Japanese 21-year-old, whose win in Melbourne sealed back-to-back Grand Slam titles, worked with the German for just over a…

Naomi Osaka, winner of the Australian Open, has jumped to the top of women's tennis with her beaten opponent Petra Kvitova rising to second in Monday's WTA rankings.

Japan's Naomi Osaka beat Czech Petra Kvitova in a thrilling Australian Open final to win back-to-back Grand Slams and become the new world number one.

US Open champion Naomi Osaka reached back-to-back Grand Slam finals with a hard-fought win over Czech seventh seed Karolina Pliskova at the Australian Open.

US Open champion Naomi Osaka came back from within two games of an Australian Open third-round exit to beat Taiwanese Hsieh Su-wei 5-7 6-4 6-1.Sixth seed Elina Svitolina also diced with danger in a 4-6 6-4 7-5 win over Chinese world number…

US Open champion Naomi Osaka said she had "the worst attitude" in her loss to Lesia Tsurenko in the Brisbane International semi-finals. The Japanese second seed was visibly frustrated as she was beaten 6-2 6-4 by Ukraine's Tsurenko in just…