Viktor Troicki of Serbia serves in his quarterfinal match against Nicolas Mahut of France during the Sydney International Tennis tournament in Sydney Friday, Jan. 15, 2016.(AP Photo/Rob Griffith)
SYDNEY (AP) Jack Sock ended David Ferrer's hopes of a fifth singles title in Auckland when he beat the top-seeded Spaniard 3-6, 6-1, 6-2 in Friday's semifinals of the ASB Classic.
Ferrer seemed on track for another title when he took the first set in 28 minutes. But the 26th-ranked Sock broke the eighth-ranked Ferrer's serve in the second game of the second set and held serve for 3-0, and was never threatened the rest of the way.
Sock advanced to his third ATP Tour final after finishing runner-up indoors at Stockholm last year and winning on clay in Houston.
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''Obviously I knew coming in I had to play some unbelievable tennis and fortunately I was able to do that,'' Sock said. ''It was a difficult day, started out I woke up with some flu-like symptoms and didn't know if I was going to be able to play.
''I ended up coming out and playing some of the best tennis of my career so maybe I can stay sick to Melbourne if I play like this.''
At the Sydney International, Viktor Troicki won his rain-delayed quarterfinal and Australian Bernard Tomic retired from his match against Russian Teymuraz Gabashvili while trailing 6-3, 3-0.
Tomic said he was feeling ill and may have had food poisoning. He plays his first-round match at the Australian Open in Melbourne on Tuesday against Uzbekistan's Denis Istomin.
Rain had postponed Tomic's quarterfinal until Friday morning, meaning he would have been forced to play a second match later in the day had he advanced to the semifinals.
''I was just feeling a little bit sick last night and was very difficult to play two matches today,'' Tomic said.
Third-seeded Troicki beat Nicolas Mahut 4-6, 6-3, 6-3 and will play Gabashvili later on Friday for a spot in Saturday's final.
Fourth-seeded Grigor Dimitrov advanced with a 4-6, 6-3, 6-4 quarterfinal win over Alexandr Dolgopolov and will next play Gilles Muller, who beat sixth-seeded Jeremy Chardy of France 7-6 (5), 6-3.
In the women's semifinals at Sydney, two-time Grand Slam champion Svetlana Kuznetsova beat top-seeded Simona Halep 7-6 (5), 4-6, 6-3. Kuznetsova's final opponent will be Monica Puig, who advanced when Belinda Bencic retired ill after losing the first set 6-0.
At the Hobart International, Eugenie Bouchard, playing her best stretch of tennis since sustaining a concussion in a dressing room fall at the U.S. Open last September, advanced to the final with a 6-1, 4-6, 6-4 win over third-seeded Dominika Cibulkova of Slovakia.