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Peirsol has won a remarkable six silver medals in major international competitions. These include the 2004 and 2008 Olympics, where he finished second in the 100-meter and 200-meter backstroke events, respectively. He also earned silver medals at the 2003, 2005, and 2007 World Championships, as well as the 2002 Pan Pacific Championships. Peirsol's impressive medal haul is a testament to his exceptional talent and consistency as a backstroke specialist.