New Haven Open At Yale - Day 8

NEW HAVEN, CT - AUGUST 24: Caroline Wozniacki of Denmark fields questions from the media after retiring from her match against Maria Kirilenko of Russia during the semifinals of the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 24, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 24: Caroline Wozniacki of Denmark fields questions from the media after retiring from her match against Maria Kirilenko of Russia during the semifinals of the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 24, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

New Haven Open At Yale - Day 8

NEW HAVEN, CT - AUGUST 24: Caroline Wozniacki of Denmark waves to the crowd as she leaves the court after retiring from her match against Maria Kirilenko of Russia during the semifinals of the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 24, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 24: Caroline Wozniacki of Denmark waves to the crowd as she leaves the court after retiring from her match against Maria Kirilenko of Russia during the semifinals of the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 24, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

New Haven Open At Yale - Day 8

NEW HAVEN, CT - AUGUST 24: Maria Kirilenko of Russia returns shot to Caroline Wozniacki of Denmark during the semifinals of the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 24, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 24: Maria Kirilenko of Russia returns shot to Caroline Wozniacki of Denmark during the semifinals of the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 24, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

New Haven Open At Yale - Day 7

NEW HAVEN, CT - AUGUST 23: Petra Kvitova of the Czech Republic returns a shot to Lucie Safarova of the Czech Republic during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 23, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 23: Petra Kvitova of the Czech Republic returns a shot to Lucie Safarova of the Czech Republic during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 23, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

New Haven Open At Yale - Day 7

NEW HAVEN, CT - AUGUST 23: Petra Kvitova of the Czech Republic is congratulated by Lucie Safarova of the Czech Republic after their match during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 23, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 23: Petra Kvitova of the Czech Republic is congratulated by Lucie Safarova of the Czech Republic after their match during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 23, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

New Haven Open At Yale - Day 6

NEW HAVEN, CT - AUGUST 22: Caroline Wozniacki of Denmark is congratulated by Sofia Arvidsson of Sweden after their match during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 22, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 22: Caroline Wozniacki of Denmark is congratulated by Sofia Arvidsson of Sweden after their match during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 22, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

New Haven Open At Yale - Day 7

NEW HAVEN, CT - AUGUST 23: Caroline Wozniacki of Denmark returns a shot to Dominika Cibulkova of Slovakia during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 23, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 23: Caroline Wozniacki of Denmark returns a shot to Dominika Cibulkova of Slovakia during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 23, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

New Haven Open At Yale - Day 7

NEW HAVEN, CT - AUGUST 23: Caroline Wozniacki of Denmark celebrates match point against Dominika Cibulkova of Slovakia during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 23, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 23: Caroline Wozniacki of Denmark celebrates match point against Dominika Cibulkova of Slovakia during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 23, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

New Haven Open At Yale - Day 6

NEW HAVEN, CT - AUGUST 22: Petra Kvitova of the Czech Republic celebrates match point against Nicole Gibbs during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 22, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)

NEW HAVEN, CT - AUGUST 22: Petra Kvitova of the Czech Republic celebrates match point against Nicole Gibbs during the New Haven Open at Yale at the Connecticut Tennis Center at Yale on August 22, 2012 in New Haven, Connecticut. (Photo by Matthew Stockman/Getty Images)