Top-ranked Caroline Wozniacki was upset by Slovakia's Dominika Cibulkova(Image) 6-3, 6-3 in her opening match at the Sydney International on Tuesday in another setback for her Australian Open preparations. The defeat follows two straight-sets losses by Wozniacki to No. 2-ranked Vera Zvonareva and U.S. Open champion Kim Clijsters in exhibition events in Singapore and Hong Kong last week. Zvonareva also had an upset defeat Tuesday, losing 7-5, 7-5 to Italy's Flavia Pennetta. Cibulkova, ranked 32nd, converted four of six break opportunities, while Wozniacki broke her opponent only once in the second-round match. Woznicki had a bye in the first round. "Definitely it's a bit tough to go from Hong Kong to Sydney and play really well here," Wozniacki said. "But I felt pretty good out there. Just wasn't my day. At the start of the new season, you always need to get into the match play." Wozniacki, the first top-seeded woman to lose her opening match at the Sydney International since 2003, said she would head to Melbourne as soon as possible to finish fine-tuning for the Australian Open, which begins Monday. Read more: http://sports.espn.go.com/sports/tennis/news/story?id=6010564
