Phelps of the U.S. reacts after winning and setting a world record as Cavic of Serbia watches after the...
Michael Phelps (R) of the U.S. reacts after winning and setting a world record as Milorad Cavic of Serbia watches after the men's 100m butterfly swimming final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)