Michael Phelps of the U.S. swims on his way to winning the goal medal on Sunday in the men's 400-meter individual medley. It was his first gold medal of the 2008 Olympics.

Michael Phelps and Garrett Weber-Gale celebrate after the U.S. won the men's 4x100m freestyle relay swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 11, 2008.

Michael Phelps put on another dominating performance at the Beijing Olympics, winning the 200-meter freestyle Tuesday with a third straight world record.

Michael Phelps (R) of the U.S. celebrates his team's victory in the men's 4 x 200 meters freestyle relay swimming final with Ryan Lochte (C) and Ricky Berens (L) during the Beijing 2008 Olympic Games at the National Aquatics Center August 13, 2008.

Michael Phelps of the United States swims during the men's 200m butterfly final at the Beijing 2008 Olympic Games in the National Aquatics Center, also known as the Water Cube in Beijing, China, Aug. 13, 2008. Phelps set a new wolrd record and won the gold medal in the event with 1 minute 52.03 seconds.

Aug 15, Phelps got his sixth golds in Men's 200-Meter Individual Medley 1h52s03 breaking the world's record again!

Phelps' 100-meter butterfly win "clear and final"

Officials of FINA, swimming's governing body, said they could understand why Serbia filed a protest after the incredible 100-meter butterfly finish Saturday morning that gave the gold medal to Michael Phelps by a fingertip.

US swimmers Michael Phelps poses after the men's 4 x 100m medley relay swimming final medal ceremony at the National Aquatics Center during the 2008 Beijing Olympic Games in Beijing on August 17, 2008. Michael Phelps became the first man to win eight gold medals at the same Olympics when the US won the men's 4x100m medley relay final in a new world record time.