Key Biscayne, Florida: Serena Williams' bid for a record sixth Key Biscayne title ended on Tuesday when she lost in the quarterfinals of the Sony Ericsson Open to former No. 1 Caroline Wozniacki, 6-4, 6-4.
"I made her run," Wozniacki said.
Wozniacki served well and was content to keep the ball in play from the baseline, using her retrieving skills to extend rallies until Williams would make a mistake. Williams hit 34 winners to 12 for Wozniacki, but also committed 36 unforced errors to the Dane's 13.