not be serious' 'Superbrat', as he was christened by the British press, truly came to public prominence for his on-court behavior, as opposed to his superb touch play in the 1981 Wimbledon tournament. It was during this tournament that his catchphrase ' You can not be serious! ' was born. McEnroe actually seemed to excel after his verbal outbursts, and despite coming close to be thrown out of the tournament after one incident in which he called the umpire ' the pits of the world ' , he made it to the final that year. McEnroe somehow managed to keep his cool against the always ice cool Bjorn Borg in the final and triumphed to bring to an end Borg's run of five successive Wimbledon wins. Marat Safin -- the angriest man in tennis? While some players like to take their anger out on the umpire or themselves, others prefer to do it to their rackets and other things around. Marat Safin was master at all of the above. A quick search on youtube reveals him to be one the biggest racket smashers and moaners is the game. Countless times the former world number one has taken it out on his racket and the umpire. This little video displays the good, the bad, and the ugly side of Safin who always ensured he had a smashin' time on court. Roddick has a meltdown moment at the 2001 US Open An over-rule in a quarter final with Leyton Hewitt at the