The International Tennis Federastion has confirmed that the Croatian tennis player Ivo Karlovic set a world record for the fastest serve in the game, during the Davis Cup tie against Germany in Zagreb.
The 2-metre 08 Karlovic yesterday sent down a 251 kilometre thunderbolt during the doubles rubber of the first round Davis Cup match, breaking the previous best of 249.4 kilometres an hour by the American Andy Roddick, also set in a Davis Cup tie in 2004.
