Janko Tipsarevic of Serbia walks back to the baseline after failing to return a serve by David Nalbandian at the All England Lawn Tennis Club at Wimbl - Photo

Saturday July 28, 01:54 PM
Janko Tipsarevic of Serbia walks back to the baseline after failing to return a serve by David Nalbandian at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Saturday, July 28, 2012. The speed of the serve is posted behind him. (AP Photo/Mark Humphrey)