Karlovic’s 156 mph serve world’s fastest
ZAGREB, Croatia – The International Tennis Federation confirmed Sunday that Ivo Karlovic of Croatia broke the world record for the fastest serve.
He struck a 156 mph serve in the fourth set of a doubles match against Germany in the Davis Cup on Saturday, breaking Andy Roddick’s previous record of 155 mph.
Karlovic and Ivan Dodig lost 3-6, 5-7, 6-3, 6-4 in the doubles against Christopher Kas and Philipp Petzschner. Germany later won the first-round series 3-2.