The athlete to win the most Olympic golds ever - Michael Phelps swam into history with his 10th and 11th career gold medals and five world records at the Beijing Games.

A day after etching his name alongside Mark Spitz and Carl Lewis, Paavo Nurmi and Larysa Latynina with gold No.9, Phelps claimed the record all to himself when he won the 200-meter butterfly Wednesday morning. An hour later, he returned to swim the leadoff of a runaway victory by the U.S. 800 freestyle relay team, which shattered the old mark by more than 4 seconds.