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Petra Kvitova

Wozniacki, Kerber, Kvitova reach Wuhan third round

Second-ranked Caroline Wozniacki reached the third round of a tournament for the first time since June at the Wuhan Open on Tuesday, while No. 1 Simona Halep lost in straight sets.

Wozniacki defeated Swedish qualifier Rebecca Peterson 6-4, 6-1, making just nine unforced errors to Peterson's 36. In the evening session, 2016 runner-up Dominika Cibulkova of Slovakia ousted Halep 6-0, 7-5, and Czech qualifier Katerina Siniakova upset defending champion Caroline Garcia 3-6, 7-6 (5), 7-6 (4). Halep said before the tournament that she was struggling with a back problem.

Wozniacki made early exits in her last five tournaments, including three first-round losses. She last...