Some of the ball girls and boys at Wimbledon got a special treat on Wednesday when they got to play a top player in front of thousands of fans.
German player Tommy Haas was in the middle of a match when his opponent Michael LLodra of France got injured and couldn't carry on.
Llodra collided with a ball girl, leaving Haas with no opponent to play and no tennis for the fans to watch.
So Haas decided to take on some of the ball boys and ball girls instead.
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