Naomi Osaka said that having her father as her coach had been "nostalgic" and revealed Tuesday that one of his favourite phrases to hear is, "It's not rocket science."

Naomi Osaka said she had been "really riled up" as Japan's two-time Grand Slam champion reached the second round at the China Open on Sunday despite being far from her best.

Japan's Naomi Osaka ended an eight-month title drought by winning the Pan Pacific Open in her home city on Sunday, her first trophy since her second consecutive Grand Slam...

Japanese tennis sensation Naomi Osaka beat Elise Mertens of Belgium on Saturday to reach the final of the Pan Pacific Open, thrilling her Japanese fans in the city of her birth.

Japanese tennis superstar Naomi Osaka announced on Friday she was splitting with her coach, her second break-up this year as she battles for form and slips down the world rankings.

US Open winner Bianca Andreescu, 200th in the world rankings a year ago, leapt into the top five on Monday, while Ashleigh Barty knocked Naomi Osaka off top spot.

Just 14 hours after Stan Wawrinka upset top seed Novak Djokovic, another Swiss player has beaten another number one seed, reports www.si.com. Defending U.S. Open champion Naomi Osaka...

Naomi Osaka justified her world ranking with her 6/3, 6/0 victory over Cori Gauff in a U.S Open third-round match at the Arthur Ashe Stadium. The 15-year old American sensation ranked 140, entered the draw as a wild card, after her sterling debut at the Championships, Wimbledon

Defending champion Naomi Osaka consoled a tearful Coco Gauff after a crushing US Open victory Saturday in a showdown billed as "the future of women's tennis" while Rafael Nadal cruised into the last 16.

Serena Williams is usually playing in the matches that thrill her most, but she's going to join a host of fans in watching Saturday's US Open third round showdown between teen sensation Coco Gauff and top-ranked defending champion Naomi Osaka

Crowd-pleaser, Coco Gauff, came through a tough battle with qualifier Timea Babos 6-2, 4-6, 6-4 to set up a third-round clash at the US Open against top seed and defending champion Naomi Osaka.

Reigning US Open champion Naomi Osaka eased into the third round Thursday but Petra Kvitova crashed out as organizers sought to play catch up at Flushing Meadows following heavy rain.