U.S. wins gold in 4x200 freestyle relay

U.S. swimmer Michael Phelps speaks at a press conference held at the media center of the 2012 Summer Olympics, Thursday, July 26, 2012, in London. Phelps insists these will be his last games. The 14-time gold medalist will go out with a bang, aiming to claim the unofficial title of greatest Olympian ever from Soviet gymnast Larisa Latynina. (Ng Han Guan)

July 31, 2012 12:00:00 AM PDT
Micheal Phelps takes home a record 19th Olympic medal