Three-time Madrid Masters winner Petra Kvitova pegged back Veronika Kudermetova 6-3, 4-6, 6-4 on Monday to earn the first of the quarter-final places.
The Russian challenger was a match removed from her upset of defending champion Kiki Bertens. Defeat also kept Kudermetova from pulling level with No. 1 Ash Barty on the WTA season lead with 23 match wins.
No. 11 Kvitova was joined in the last eight at the Caja Magica by eighth seed Belinda Bencic after the Swiss advanced when Tunisian opponent Ons Jabeur retired injured trailing 7-6(2), 4-3.
“Definitely it was a tough one,” Kvitova said after reaching her sixth Madrid quarter-final. “It was about serving a lot.
“There was just the one break in each set. I’m really glad I managed most of it mentally.
“Veronika was really in the fire. Since she won Charleston, she really plays great. I was not relaxed, but calm but I managed to bring the win.”
Bencic played the semi-finals here in 2019 at the last edition, losing to Simona Halep.
The Swiss moved through when Jabeur could not continue after chasing a return at 3-3 in the second set, and taking a medical timeout before finally retiring.
“I felt terrible for her,” Bencic said. “She’s such a nice person, we are good friends. You never want this to happen to anyone.
“I wish her the best recovery. Maybe it’s good she stopped to not make it worse before important tournaments.
“Overall we played a great match, there were no breaks at all. I’m definitely happy with how I played but I didn’t want to win like this.”
Main photo:- Petra Kvitova celebrates in Madrid – © WTATennis.com