Athletes To Watch At Swimming Trials

Michael Phelps

He has vowed never to do eight events again, but Michael Phelps will remain one of the most important American swimmers in London. The 14-time gold medalist says he's going "try different events" in London, and at age 26, Phelps remains in his prime. With three more medals, Phelps will become the most decorated Olympian of all time, and he obviously remains vital to the United States' medal count.