Petra Kvitova of the Czech Republic yells out after winning a break point in the women's final match against compatriot Karolina Pliskova at the Sydney International Tennis tournament in Sydney, Friday, Jan. 16, 2015. (AP Photo/Rob Griffith)
Karolina Pliskova of the Czech Republic plays a shot in the women's final against compatriot Petra Kvitova at the Sydney International Tennis tournament in Sydney, Friday, Jan. 16, 2015. (AP Photo/Rob Griffith)
Petra Kvitova of the Czech Republic plays a shot in the women's final match against compatriot Karolina Pliskova at the Sydney International Tennis tournament in Sydney, Friday, Jan. 16, 2015. (AP Photo/Rob Griffith)
Petra Kvitova of the Czech Republic reacts after she won a break point in her match against Tsvetana Pironkova of Bulgaria at the Sydney International Tennis tournament in Sydney, Australia Thursday, Jan. 15, 2015. (AP Photo/Rob Griffith)
SYDNEY — Wimbledon champion Petra Kvitova beat her Czech Fed Cup teammate Karolina Pliskova 7-6 (5), 7-6 (6) to win the Sydney International women's singles title Friday.
Earlier, Alexandr Dolgopolov retired injured from the Kooyong exhibition tournament in Melbourne with a right-knee injury, handing Spain's Fernando Verdasco the title and placing the Ukrainian player's Australian Open appearance in doubt.
Dolgopolov, seeded 21st at the Australian Open that begins Monday, lost the opening set 7-6 (3) before calling for medical staff because of the injury, and saying he could not continue.
The Ukrainian is scheduled to play Paolo Lorenzi of Italy in the first round of the Australian Open.
The 26-year-old Dolgopolov said the injury felt the same as the one he sustained in July playing in Hamburg, Germany, which required surgery and 10 weeks off the tour.
"When I was warming up and playing the first set it was fine and the last few games I started feeling something strange in the knee and it started to get worse," he said. "I'm not sure I'll be playing in the Open because it feels quite the same like I did before the surgery. My physio is saying 99 percent (the) meniscus that I injured before."
In a final round-robin match at Kooyong, Richard Gasquet of France beat Kei Nishikori of Japan 7-6 (4), 7-6 (6).
Czech qualifier Jiri Vesely beat South African Kevin Anderson 6-4, 7-6 (4) Friday to reach the final of the Heineken Open at Auckland, New Zealand. Vesely will face France's Adrian Mannarino in Saturday's final.
Mannarino beat compatriot Lucas Pouille, a lucky loser from the qualifying draw, 6-4, 3-6, 7-5.
In the WTA event at Hobart, England's Heather Watson advanced to the final with a 6-3, 7-5 win over Alison Riske of the United States. She'll play American Madison Brengle, who beat Kurumi Nara of Japan 6-4, 1-6, 6-3.
"As far as preparation goes it's brilliant for me," Watson said. "I've got a lot of confidence from these wins."