EASTBOURNE: Caroline Wozniacki retired three games into her semifinal at the grass-court Nottingham Open on Friday, handing 18-year-old Swiss Belinda Bencic a place in the final against former Wimbledon runner-up Agnieszka Radwanska.

The second-seeded Wozniacki was 3-0 down when she called for her trainer and stretched her leg muscles before deciding she could not continue. An official reason for Wozniacki’s retirement was not immediately given.

Radwanska beat Sloane Stephens of the United States 6-1, 6-7 (3), 6-2 on Friday to stay in contention for a second title at the Wimbledon warm-up tournament.

The ninth-seeded Radwanska clinched the victory on her second match point with a mishit return that crept over the net and beyond the reach of Stephens.

Radwanska served for the match at 6-5 in the second set but Stephens broke before dominating the tiebreaker.

The Polish player, who won the Eastbourne title in 2008, lost to Serena Williams in the Wimbledon final in 2012.

Bencic is bidding for her first title, after losing finals in Tianjin in 2014 and ‘s-Hertogenbosch this year.

Querrey, Istomin showdown

Sam Querrey came from a set down to beat Alexandr Dolgopolov on Friday and reach the final of the Nottingham Open, where the American will play Denis Istomin of Uzbekistan.

The 12th-seeded Querrey won 4-6, 6-3, 7-5 in the Wimbledon warm-up tournament.

Istomin advanced when defending champion Marcos Baghdatis retired early in their semifinal match with a left calf injury.

Baghdatis, who was on a nine-match winning streak at the Wimbledon warm-up tournament, was leading 2-1 with a break in the first set when he pulled up after making a serve. He received treatment and retired.

“I felt my calf pop,” Baghdatis said. “I was feeling good, I was happy, everything was going my way and I was a break up early in the match. It’s just the way it is.”

Baghdatis said he will make a decision about playing at Wimbledon after seeing doctors on Saturday. The 2006 Australian Open runner-up and Wimbledon semifinalist was drawn Friday to face US player Donald Young in the first round.

The No. 92-ranked Istomin is unseeded at Nottingham.