Li, Wozniacki advance

Top ranked Caroline Wozniacki cruised into the next round and China's Li Na had to endure a rain delay before booking her spot in the semifinals of the New Haven Open on Thursday.
Wozniacki remained undefeated advancing with a 7-5, 6-3 win over American teenager Christina McHale.
Three-time defending champ Wozniacki has a perfect 15-0 career record at the annual final tournament before the US Open, which begins in four days.
Wozniacki broke McHale's serve in the eighth game of the second set of the one hour, 42 minute centre court match.
China's Li endured several hours of rain delays before advancing with a 6-4, 3-6, 6-2 quarterfinal victory over Russia's Anastasia Pavlyuchenkova.
Li will play Czech qualifier Petra Cetkovska who beat fourth-seed Marion Bartoli 7-5, 7-5.
Wozniacki will face third-seeded Francesca Schiavone, who advanced without hitting a shot after Anabel Medina Garrigues withdrew due to a knee injury.
Medina Garrigues, who was seeking a third title of 2011, fell to the ground and grabbed her knee after failing to convert a third match point in the second set of her 6-2, 7-6 (7/5) victory on Wednesday.
With the start of the US Open looming on Monday, Medina Garrigues said she didn't want to take a chance on making her knee worse.