Wimbledon Upsets

Spain's Rafael Nadal reacts during the match against Argentina's Juan Martin Del Potro at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Kirsty Wigglesworth)

Russia's Mikhail Youzhny celebrates winning a point against Switzerland's Roger Federer during their match at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Anja Niedringhaus)

Poland's Lukasz Kubot reacts during the match against Spain's Feliciano Lopez at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Sang Tan)

Spain's Feliciano Lopez reacts after defeating Poland's Lukasz Kubot at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Sang Tan)

Spain's Feliciano Lopez reacts after defeating Poland's Lukasz Kubot at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Sang Tan)

Spain's Feliciano Lopez reacts after defeating Poland's Lukasz Kubot at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Sang Tan)

Serbia's Novak Djokovic celebrates after defeating France's Michael Llodra at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Anja Niedringhaus)

Serbia's Novak Djokovic, right, shakes hands after defeating France's Michael Llodra at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Anja Niedringhaus)

Denmark's Caroline Wozniacki reacts during her match against Slovakia's Dominika Cibulkova at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Alastair Grant)

Venus Williams of the US reacts during her match against Bulgaria's Tsvetana Pironkova at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Kirsty Wigglesworth)

Slovakia's Dominika Cibulkova celebrates defeating Denmark's Caroline Wozniacki in their match at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Alastair Grant)

Serena Williams of the US wipes her face during her match against France's Marion Bartoli at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Anja Niedringhaus)

Serena Williams of the US celebrates a point win during the match against France's Marion Bartoli at the All England Lawn Tennis Championships at Wimbledon, Monday, June 27, 2011. (AP Photo/Anja Niedringhaus)

Austria's Jurgen Meltzer, right, and Iveta Benesova of the Czech Republic in action against India's Mahesh Bhupathi and Elena Vesnina in the mixed doubles at the All England Lawn Tennis Championships at Wimbledon, Sunday, July 3, 2011. (AP Photo/Alastair Grant)