I played a club tournament recently with a bona fide "pusher." I lost the first set 3-6, but realized what I had to do, and trounced my opponent 6-2 in the second set, and was doing the same in the third set at 5-2, up with 30-0 in what would have been the final game. As I was about to serve, (for 40-0) he grabbed his leg and fell to the Court in a dramatic flourish, sitting like cheerleaders from the old days used to sit with both legs curled around them to the right. I ran over to see if he was ok, and he said his leg was injured. I suggested an ice pack, and then asked if he was retiring. He cried "yes," and some of his friends carried him off the court. He was later seen the next day, playing and moving as if nothing had happened. WTF? has this ever happened to you? Please explain this phenomena.