Naomi Osaka has no regrets over her stunning third-round loss on Thursday at the ATP and WTA Cincinnati Masters to Swiss wild card Jil Teichmann.
The four-time Grand Slam champion went down 3-6, 6-3, 6-3 to the world number 76 and admitted after the upset that her Tokyo Olympic third-round loss was on her mind.
“I was doing all I was supposed to do,” the Japanese world number two said. “In the second and third sets I was too defensive. I learned a lot from this match — I can sleep at night.”
Osaka lost to an opponent who has struggled with several injuries this season but is now back to health.
Osaka made 41 unforced errors in the match while hitting only 17 winners while Teichmann struck 21 winners against 29 unforced errors.
Women’s top seed Ashleigh Barty powered into the quarter-finals 6-0, 6-2 over Victoria Azarenka.
Barty improved to 13-1 over top-20 opponents this season and will next face off against fellow French Open champion Barbora Krejcikova, who beat Garbine Muguruza 6-1, 6-7 (5/7), 6-2.
In the men’s section, top seed Daniil Medvedev reached the quarter-finals with a 6-3, 6-3 defeat of fellow former champion Grigor Dimitrov.
Russian Medvedev won the Cincinnati title in 2019 while Dimitrov took the trophy at the key US Open warm-up event in 2017. Medvedev will next face Pablo Carreno Busta who beat ninth seed Hubert Hurkacz.
Second seed Stefanos Tsitsipas needed a fightback to tame Italian Lorenzo Sonego 5-7, 6-3, 6-4.
Third-seeded Olympic Gold medallist Alexander Zverev defeated Argentine Guido Pella 6-2, 6-3 in 73 minutes while never facing a break point.
Fourth seed Andrey Rublev ended the run of Gael Monfils with a 7-6 (7/2), 7-6 (7/5) win while Félix Auger-Aliassime beat fifth seed Matteo Berrettini 6-4, 6-3.