It was the first win over a top-five player for 84th-ranked Nao Hibino
US Open 2019: Defending champion Naomi Osaka eases into third round with comfortable win over Magda Linette
Naomi Osaka continued her bid for a second straight US Open title with a business-like win over Magda Linette to book her place in the third round.
US Open 2019: Defending champion Naomi Osaka survives Anna Blinkova scare in first round to progress with unconvincing start
It was an erratic performance for Naomi Osaka, who committed an unsightly 50 unforced errors, 28 more than her opponent, but also blasted 44 winners and pounded eight aces.
Wimbledon 2019, singles round-up: Rafael Nadal, Serena Williams storm into fourth round; Fabio Fognini ousted
Serena Williams, Ashleigh Barty and Petra Kvitova eased into the fourth round while Tennys Sandgren stunned 12th-seeded Fabio Fognini in the third round.
French Open 2019: Naomi Osaka, Simona Halep survive scares to enter second round; Alexander Zverev wins thrilling five-setter
Naomi Osaka and Simona Halep survived scares to reach the second round of the French Open while Alexander Zverev won in five tough sets against John Millman.
Australian Open 2019: Japanese fourth seed Naomi Osaka overcomes nervous start to beat Magda Linette in first round
Japanese fourth seed Naomi Osaka overcame a nervous start and distraction from flying bugs to ease into the Australian Open second round on Tuesday.
US Open 2018: Serena Williams makes triumphant return to Flushing Meadows with straight-sets win over Magda Linette
Williams, a six-time champion at Flushing Meadows, missed last year's edition as she gave birth to daughter Olympia on 1 September.
Washington Open: Alexander beats Mischa in battle of Zverev brothers; John Isner, Naomi Osaka crash out
It was the first ATP meeting for the Zverev siblings, 21-year-old top seed Alex besting 30-year-old Mischa as he rarely did in boyhood battles.
Tianjin Open: Maria Sharapova cruises past Peng Shuai to reach first final since return from doping ban
Five-time Grand Slam winner Maria Sharapova crushed Peng Shuai 6-3, 6-1 at the Tianjin Open on Saturday to reach her first final since serving a 15-month doping ban.
The former World No 1 Maria Sharapova defeated Magda Linette of Poland 7-5, 6-3 and will play Swiss qualifier Stefanie Voegele in the quarter-finals.
Pan Pacific Open: Garbine Muguruza thrashes Monica Puig in straight sets to enter quarters-finals in Tokyo
Muguruza recovered from an indifferent start to reach the last eight in Tokyo, the top seed catching fire after a trade of early breaks to rattle off the last seven games.
Former World No 1 Karolina Pliskova is confident that splitting with coach David Kotyza will not be a hindrance as she attempts to go it alone over the home stretch of the season, leading up to the WTA Finals in Singapore in October.
US Open 2017: Karolina Pliskova's controlled aggression will help her win a Grand Slam, says Mats Wilander
Karolina Pliskova will undoubtedly win a grand slam title at some point because she, unlike many other players, is able to control her aggression, according to former World No 1 Mats Wilander.
US Open 2017: Rafael Nadal's victory overshadowed by 19-year-old Naomi Osaka's upset of Angelique Kerber
Rafael Nadal took his US Open first-round record to 13-0 but it was Naomi Osaka who stole the headlines by knocking out defending champion Angelique Kerber as torrential rains caused more than 50 matches to be shelved on Tuesday.
Pliskova outclassed 72nd-ranked Magda Linette after the roof on Arthur Ashe was closed just before the second set.
Sixth seed CoCo Vandeweghe had barely raised a sweat when her opponent Ajla Tomljanovic retired hurt to hand the American victory in their Stanford Classic first-round encounter.
French Open 2017: Rafael Nadal cruises into quarters with dominant victory, Karen Khachanov ousts John Isner
Rafael Nadal continued his ruthless form at Roland Garros by dispatching Spanish 17th seed Roberto Bautista Agut 6-1, 6-2, 6-2 to match Roger Federer's mark of last-eight appearances in Paris.
French Open 2017: Petra Martic's resilience after career-threatening injury pays off as she makes last-16
Two months ago, Petra Martic was playing qualifiers at a pocket-money claycourt tournament on sub-standard courts in Italy where ball boys were non-existent. Now, she's made the French Open fourth round.
Czech second seed Karolina Pliskova advanced to the fourth round at Roland Garros on Sunday with a 7-5, 6-1 victory over Germany's Carina Witthoeft.