The best players in professional tennis have always been very recognizable. For the last couple of decades, names like Federer, Nadal, Djokovic, and Williams have dominated the sport. Before that, names like Borg, McEnroe, Graf, and Navratilova were constantly in the news. Less well-known however is the fact that many of these players had some very cool nicknames, some more popular than others. The ball is in your court: show me how much you know about this topic! Here comes the 1st serve!