From left, United States' Michael Phelps, United States' Conor Dwyer, United States' Ricky Berens and United States' Ryan Lochte pose with their gold medals for the men's 4x200-meter freestyle relay ... more 

From left, United States' Michael Phelps, United States' Conor Dwyer, United States' Ricky Berens and United States' Ryan Lochte pose with their gold medals for the men's 4x200-meter freestyle relay swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Tuesday, July 31, 2012. (AP Photo/Mark J. Terrill) less