Two-time Grand Slam champion Naomi Osaka and her elder sister Mari have designed a limited edition face mask, which is being sold to benefit under-privileged youngsters in Japan.
Mike Rowbottom: If the IOC think they can "switch off" athlete protests at Tokyo 2020 they can forget it
If the rescheduled Tokyo Olympics and Paralympics do take place next summer it will mean, one would fervently hope, that the COVID-19 pandemic has been controlled, if not eradicated. And if so, the International Olympic Committee (IOC) needs to gird itself.
Japanese tennis star Naomi Osaka has vowed athletes and organisers will be "stronger than ever" at the Tokyo 2020 Olympic Games after the event was postponed because of the coronavirus pandemic.
Spain lead Japan in their Fed Cup qualifying clash as Naomi Osaka suffered a shock defeat to Sara Sorribes Tormo at La Manga Club in Murcia.
Serena Williams' smashed racket from her infamous US Open final defeat by Naomi Osaka last year has been sold for $20,910 (£15,941/€18,756) at an auction.
Late injury replacement Kiki Bertens pulled off a major surprise, defeating world number one Ashleigh Barty at the Women's Tennis Association (WTA) Finals in Shenzhen, China.
Tennis ace Naomi Osaka is to confirm her Japanese citizenship in order to represent the host nation at next year's Tokyo 2020 Olympic Games.
Naomi Osaka battled back from behind to beat world number one Ashleigh Barty in the final of the China Open.
The WTA China Open has got its dream final, with Japan's Naomi Osaka playing the world number one, Australian Ashleigh Barty.
Reigning women's champion Naomi Osaka was knocked out in the fourth round of the US Open after coming unstuck to a superb performance by Switzerland's Belinda Bencic.
Defending champion Novak Djokovic heads into the US Open as favourite to secure a 17th men's singles Grand Slam title.
Novak Djokovic will be on a revenge mission in his semi-final clash with Daniil Medvedev tomorrow after he eased past Lucas Pouille in the last eight of the Cincinnati Masters.
World number one Naomi Osaka was forced to dig deep against Aliaksandra Sasnovich to reach the third round of the Cincinnati Masters.
Serena Williams progressed to the semi-finals of the Rogers Cup in Toronto with a straight sets victory over Naomi Osaka in their first meeting since the 2018 US Open final.