Matt Grevers of the United States swims to the gold medal in the Men's 100m backstroke final at the FINA Swimming World Championships in Barcelona, Spain, Tuesday, July 30, 2013. (AP Ph

 

              Matt Grevers of the United States swims to the gold medal in the Men
Matt Grevers of the United States swims to the gold medal in the Men's 100m backstroke final at the FINA Swimming World Championships in Barcelona, Spain, Tuesday, July 30, 2013. (AP Photo/David J. Phillip)