No. 21 seed, Andrea Petkovic of Germany, pulled an upset over World No. 1, Caroline Wozniacki of Denmark at the 2011 WTA Sony Ericsson Open, 7-5, 3-6, 6-3.
It was the biggest win of Petkovic’s career. Her previous best was a win over then No. 6 Svetlana Kuznetsova in 2009.
Petkovic fired an ace on set point to end the 1st set, and another ace on match point to finish the match. She totaled 3 aces, with 4 double faults, while converting 6 of 14 break points and scoring 101 points overall. Wozniacki only had 1 ace, with 5 double faults, scored on 5 of 17 break points against Petkovic, and won 97 points in all.
