Ivo Karlovic set a record for aces in a tour-level match Sunday, serving 55 in his 6-7 (1), 6-7 (4), 7-6 (4), 6-4, 6-3 loss to Lleyton Hewitt in the first round of the French Open. The ATP began keeping records on aces in 1991. Karlovic shared the previous record of 51 aces with Joachim Johansson. The old mark for aces in a French Open match was 37, set by Andy Roddick in 2001. More...