A 6'10" Croat named Ivo Karlovic broke Andy Roddick's fastest-serve record in the fourth set of a Davis Cup doubles match yesterday. In 2004, Roddick's yellow ball traveled 155 mph (or 249.5 km/h); Karlovic's went 155.96 mph (or 251 km/h). »3/06/11 10:30am 3/06/11 10:30am
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