Ivo Karlovic - Fastest Serve Ever World Record

Zagreb – Big-hitting Croat Ivo Karlovic on Saturday set a new world record with a 251km per hour serve in his country's Davis Cup World Group first round tie against Germany, competition organisers said.

The previous record of 249.4km per hour was set by American Andy Roddick in a Davis Cup semifinal in 2004.

The 2.08m Karlovic, making his return from achilles surgery, hit the monster serve in the fourth set of his doubles tie which he and teammate Ivan Dodig lost 6-3, 3-6, 5-7, 6-3, 6-4 to Germany's Christopher Kas and Philipp Petzschner.