Meet Ivo Karlovic, the King of aces...

Karlovic sets US Open record with 61 aces!!! IMAGE: Ivo Karlovic of Croatia serves . Photograph: Grant Halverson/Getty Images Ivo Karlovic set a US Open record on Tuesday when he banged down 61......

Karlovic slays Roddick

Second seed Andy Roddick was knocked out of the Madrid Masters in his first match as he lost 3-6, 7-6, 7-6 to big serving Croat Ivo Karlovic on Wednesday. Karlovic, the tallest player on the ATP......

Karlovic sweeps aside Safin

Big-serving Croat Ivo Karlovic continued his good run of form to dump former winner Marat Safin out of the Madrid Masters 6-3, 6-4 in the first round on Tuesday. Karlovic, who won his third title......

Karlovic pummels Djokovic out of Madrid

Towering Croat Ivo Karlovic toppled third seed Novak Djokovic 7-6, 7-6 to make the quarter-finals of the Madrid Masters on Thursday. The 14th seed will meet Frenchman Gilles Simon next after......

Indian Wells: Rafa downs Karlovic to reach semis

World number one Rafa Nadal withstood a barrage of power serving by Croat Ivo Karlovic to reach the semi-finals of the Indian Wells ATP tournament with a thrilling 5-7, 6-1, 7-6 victory on......