Athens 2004-4x100m Medley-PEIRSOL Aaron, HANSEN Brendan, CROCKER Ian, LEZAK Jason (USA) 1st.

Athens 2004-4x100m Medley-PEIRSOL Aaron, HANSEN Brendan, CROCKER Ian, LEZAK Jason (USA) 1st.

15 Jul 2000: Aaron Peirsol swims during the Janet Evans Invitational at the McDonald's Swim Stadium in Los Angeles, California.Mandatory Credit: Donald Miralle /Allsport

21 Sep 2000: Gold medalist Lenny Krayzelburg of the USA (centre), silver medalist Aaron Peirsol of the USA (lleft) and bronze medalist Matthew Welsh of Australia celebrate with their medals after the Mens 200m Backstroke Final during the Sydney 2000 Olympic Games at the Aquatic Centre, Olympic Park, Sydney, Australia. DIGITAL IMAGE. Mandatory Credit: Ross Kinnaird/ALLSPORT

ATHENS - AUGUST 21: (L-R) Aaron Peirsol, Brendan Hansen, Ian Crocker and Jason Lezak of the United States win the gold medal and set a new world record of 3:30.68 in the men's swimming 4 x 100 metre medley relay competition on August 21, 2004 during the Athens 2004 Summer Olympic Games at the Main Pool of the Olympic Sports Complex Aquatic Centre in Athens, Greece. (Photo by Donald Miralle/Getty Images) *** Local Caption *** Aaron Peirsol;Brendan Hansen;Ian Crocker;Jason Lezak

ATHENS - AUGUST 15: Aaron Peirsol of USA and Lenny Krayselburg of USA compete in the men's swimming 100 metre backstroke heat on August 15, 2004 during the Athens 2004 Summer Olympic Games at the Main Pool of the Olympic Sports Complex Aquatic Centre in Athens, Greece. (Photo by Al Bello/Getty Images) *** Local Caption *** Aaron Peirsol;Lenny Krayselburg

LONG BEACH, CA - JULY 12: Aaron Peirsol jumps in the water before going on to win the 200 backstroke final and set a new world record of 1:54.74 during the U.S. Swimming Olympic Team Trials on July 12, 2004 at the Charter All Digital Aquatic Center in Long Beach, California. (Photo by Al Bello/Getty Images)

OMAHA, NE - JULY 03: Aaron Peirsol swims in the preliminary heats of the 200 meter backstroke during the U.S. Swimming Olympic Trials on July 3, 2008 at the Qwest Center in Omaha, Nebraska.