Ian Collins is Leading Britain's Conversation.
What happens to all the old balls in Wimbledon? They change them every 10 games or so.
** Definitive **
Name: Barry, Finchley
Answer: They sell "Wimbledon Seconds" balls to tennis clubs. For the pros, they only use them for nine games, so they are nearly new and perfect for us amateurs. You can buy them in the Wimbledon Shop.