

Switzerland's Roger Federer hits a return to Austria's Jurgen Melzer (not shown) at the 2010 Wimbledon tennis championships in London, June 28. Toby Melville/Reuters
Spain's Rafael Nadal hits a return to Germany's Philipp Petzschner (not shown) at the 2010 Wimbledon tennis championships in London, June 26. Phil Noble/Reuters
Britain's Andy Murray hits a return to Sam Querrey (not shown) of the US at the 2010 Wimbledon tennis championships in London, June 28. Toby Melville/Reuters
Andy Roddick of the US hits a return to Taiwan's Lu Yen-hsun (not shown) at the 2010 Wimbledon tennis championships in London, June 28. Phil Noble/Reuters
Sweden's Robin Soderling celebrates defeating Spain's David Ferrer (not shown) at the 2010 Wimbledon tennis championships in London, June 28. Suzanne Plunkett/Reuters
Serena Williams of the US makes a forehand return during her match against Slovakia's Dominikova Cibulkova (not shown) at the All England Lawn Tennis Championships at Wimbledon, June 26. Anja Niedringhaus/AP
Venus Williams of the US hits a return to Australia's Jarmila Groth of Australia (not shown) at the 2010 Wimbledon tennis championships in London, June 28. Phil Noble/Reuters
Belgium's Kim Clijsters hits a return to Russia's Maria Kirilenko (not shown) at the 2010 Wimbledon tennis championships in London, June 25. Phil Noble/Reuters
Russia's Maria Sharapova makes a backhand return to Ioana Raluca Olaru of Romania (not shown) at the All England Lawn Tennis Championships at Wimbledon, Thursday, June 24. Jon Super/AP
Belgium's Justine Henin hits a return to Belgium's Kim Clijsters (not shown) at the 2010 Wimbledon tennis championships in London, June 28. Stefan Wermuth/Reuters