Competitor for the  United States Olympic Games Gold 2004 Athens 100 m backstroke Gold 2004 Athens 200 m backstroke Gold 2004 Athens 4x100 m medley Gold 2008 Beijing 100 m backstroke Gold 2008 Beijing 4x100 m medley Silver 2000 Sydney 200 m backstroke Silver 2008 Beijing 200 m backstroke World Championships (LC) Gold 2001 Fukuoka 200 m backstroke Gold 2003 Barcelona 100 m backstroke Gold 2003 Barcelona 200 m backstroke Gold 2003 Barcelona 4x100 m medley Gold 2005 Montreal 100 m backstroke Gold 2005 Montreal 200 m backstroke Gold 2005 Montreal 4x100 m medley Gold 2007 Melbourne 100 m backstroke Gold 2009 Rome 200 m backstroke Gold 2009 Rome 4x100 m medley Silver 2003 Barcelona 4x200 m freestyle Silver 2007 Melbourne 200 m backstroke World Championships (SC) Gold 2002 Moscow 200 m backstroke Gold 2002 Moscow 4x100 m freestyle Gold 2002 Moscow 4x100 m medley Gold 2004 Indianapolis 100 m backstroke Gold 2004 Indianapolis 200 m backstroke Gold 2004 Indianapolis 4x100 m medley Silver 2002 Moscow 100 m backstroke Bronze 2002 Moscow 4x200 m freestyle Pan American Games Silver 1999 Winnipeg 200 m backstroke Pan Pacific Championships Gold 2002 Yokohama 100 m backstroke Gold 2002 Yokohama 200 m backstroke Gold 2002 Yokohama 4x100 m medley Gold 2006 Victoria 100 m backstroke Gold 2006 Victoria 200 m backstroke Gold 2006 Victoria 4x100 m medley Gold 2010 Irvine 100 m backstroke Gold 2010 Irvine 4x100 m medley Aaron Wells Peirsol (born July 23, 1983) is a former American swimmer who specialized in the backstroke. He is a three-time Olympian and seven-time Olympic medalist (five gold, two silver). As part of the American team, he holds the world record in the 4×100-meter medley relay (long course). Individually, he currently holds the world record in the 100 and 200-meter backstroke (long course)..