Michael Phelps, second from right, celebrates with members of the gold medal men's 4 X 100-meter medley relay team at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London,... more 

Michael Phelps, second from right, celebrates with members of the gold medal men's 4 X 100-meter medley relay team at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Saturday, Aug. 4, 2012. (AP Photo/Julio Cortez) less