STUTTGART, Germany — Top-ranked Naomi Osaka withdrew from the Porsche Grand Prix semifinals because of an abdominal injury on Saturday.
Osaka said she began to feel the injury before her quarterfinal on Friday, when she came back from 5-1 down in the third set to beat Donna Vekic of Croatia.
“I wanted to wait to see if I could play. I woke up today and I had to roll out of bed, then I decided I wasn’t able to play,” Osaka said.
Her opponent, No. 8-seeded Anett Kontaveit, received a walkover into her fifth WTA final. Kontaveit also advanced to the quarterfinals when Victoria Azarenka retired hurt in their third set.
Osaka didn’t believe her abdominal strain would slow her down too long, as she said she’s endured many of them.
Kontaveit will play Petra Kvitova in the final, after the Czech beat Kiki Bertens of the Netherlands 7-6 (3), 3-6, 6-1 in two hours.
The third-ranked Kvitova has reached her fourth final of the year, and aims for her second title, after winning Sydney in January.
WIMBLEDON, England (AP) Roger Federer delivered another vintage Centre Court performance to reach a record-extending 17th Wimbledon quarterfinal.
Federer ousted 17th-seeded Matteo Berrettini 6-1, 6-2, 6-2 in a match that only lasted 1 hour, 14 minutes.
The eight-time Wimbledon champion lost only one point on his serve in the first set and didn’t face a break point until he was up 3-0 in the third. He saved that one and went on to serve out the match at love.
The 37-year-old Federer became the oldest man to reach a Grand Slam quarterfinal since Jimmy Connors did it at 39 at the 1991 U.S. Open.
WIMBLEDON, England (AP) Four-time champion Novak Djokovic is into the Wimbledon quarterfinals again after beating Ugo Humbert in straight sets.
Djokovic took advantage of 34 unforced errors to win 6-3, 6-2, 6-2 on No. 1 Court and set up a meeting with David Goffin.
Djokovic, who beat Kevin Anderson in last year’s final, reached his 11th Wimbledon quarterfinal. That puts him level with Boris Becker in fourth place on the all-time list. Roger Federer was trying to reach a record-extending 17th later.
Goffin beat Fernando Verdasco 7-6 (9), 2-6, 6-3, 6-4.
Sam Querrey also advanced after winning an all-American matchup against Tennys Sandgren 6-4, 6-7 (9), 7-6 (3), 7-6 (5).