WINSTON-SALEM, North Carolina — Austrian veteran Jurgen Melzer won the ATP Winston-Salem Open Saturday as Frenchman Gael Monfils quit with an abdominal muscle injury while trailing 6-3, 2-1. The 15th-seeded Monfils was unable to go on after playing the third game of the second set. He was already down a break in the set when he took a medical time out, opting not to continue and handing ninth-seeded Melzer a fifth career title. On Friday, Monfils and Melzer had upset higher-ranked players to advance to the final. Frenchman Monfils overcame early struggles to beat Alexandr Dolgopolov of the Ukraine 7-6 (11), 6-3 in the first semifinal at the Wake Forest Tennis Center. Melzer, from Austria, then pulled off the biggest upset in the night match, beating America's Sam Querrey — at No. 29, the highest ranked player in the semifinals, and the crowd favorite — 6-2, 4-6, 6-3. Kvitova-Halep New Haven Open final set In Connecticut, former Wimbledon champion Petra Kvitova stormed into the final of the New Haven Open, the last women's warm-up event before the US Open, with a ruthless 6-0, 6-1 win over Klara Zakopalova Friday. Kvitova showed no mercy against her Czech Fed Cup teammate, racing to victory in just 50 minutes, to remain on course to defend the title she won in Connecticut last year. Kvitova's opponent in Saturday's final will be Romania's Simona Halep, who upset four-time New Haven Open winner Caroline Wozniacki of Denmark 6-2, 7-5. “I don't think I've played Simona before,” said Kvitova. “I know that she's a very good mover.” For Kvitova, who won Wimbledon in 2011, Saturday's final provides her with the chance to claim her 11th career title and her second this year. The 23-year-old had struggled in her previous matches so was relieved to get through quickly against her compatriot. “It was nice to finally have a two-setter,” she said. “I was asked in a press conference this week if I prefer shorter matches. And I said, ‘Of course, I prefer shorter matches but it's not always up to me!'” — Agencies