Wheelchair tennis highlights - London 2012 Paralympic Games

Wheelchair tennis originated in the USA in the 1970's and appeared at the Paralympics for the first time in Barcelona in 1992. Today, the sport is practiced in more than 100 different countries. The game follows able-bodied rules with one exception -- the ball is allowed to bounce twice. To compete, athletes must have a permanent or substantial loss of function in one or both legs. They can compete in singles or doubles in matches that are the best-of-three sets. At the London 2012 Game