Naomi Osaka, Serena Williams suffer upset losses

Naomi Osaka, Serena Williams suffer upset losses

American Serena Williams hits a shot during her French Open third-round match against American Sofia Kenin at Roland Garros in Paris on Saturday.

It was the 23-time Grand Slam title winner's earliest exit at a Slam in nearly five years and she was eager to be away from the tournament site as quickly as possible.

Instead, Barty will play world number 35 Sofia Kenin after the 20-year-old fearlessly blasted compatriot Williams off the court.

From the early exits of Petra Kvitova and Kiki Bertens due to injury and illness, to the same-day exits from No.1 Naomi Osaka and 23-time major champion Serena Williams, Week 1 at Roland Garros was not short of drama.

Defending champion and third seed Simona Halep stormed into the last 16 with a 55-minute 6-2, 6-1 thrashing of Ukrainian 27th seed Lesia Tsurenko.

It decidedly was not Osaka's, who wound up with a hard-to-believe 38 unforced errors; Siniakova made 13.

"I haven't played anyone like that in a while", she said, visibly disappointed.

But she had been living extremely dangerously and against Czech Siniakova, the world doubles No.1 and ranked 42 in singles, she could not find a way back, going down 6-4 6-2.

World No 1 Naomi Osaka was also knocked out during the third round of the tournament, losing to Katerina Siniakova of the Czech Republic.

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Still, when Kenin went down 0-3 in the second set to Timea Bacsinszky, déjà vu momentarily kicked in.

"I think the one who is still in the tournament gets priority, that's how I see it", said Federer after easing past Leonardo Mayer to reach his 54th quarter-final at the majors.

Osaka, 21, was looking to win her third consecutive major before the loss, having won the 2018 U.S. Open and 2019 Australian Open. "Being able to play through those nerves for the first time and finally get that win, I think, was really big for her. I was very solid", said Monfils.

"But then it kind of goes away, because I try to focus on playing my matches".

Osaka said Saturday she felt exhausted and was dealing with a headache.

The Swiss meets Greek fourth-seed Stefanos Tsitsipas in an eagerly anticipated battle of one-handed backhands Sunday. Kenin defeated Williams 6-2, 7-5 to advance to the fourth round.

But she clearly focused on doing it this year, which she called a mistake.

But Kenin grabbed what proved to be the crucial break in the 11th game and held her nerve to take victory on a second match point when Williams fired a backhand long.

Wawrinka, the 2015 champion and a three-time major victor, recorded his 500th match win with a 7-6 (7-5), 7-6 (7-4), 7-6 (10-8) win over Grigor Dimitrov.