Natalie Coughlin

Swimmers Natalie Coughlin, left, and Elizabeth Pelton, right, compete in Heat 17 of the women's 100-meter backstroke of the 2012 U.S. Olympic Team Trials on June 26, 2012, in Omaha, Neb. Coughling had medaled in every Olympic event she has entered and needs just two more medals to claim the titled of the U.S.'s most decorated female swimming Olympian.

Special section: The 2012 London Games

Credit: Frederic J. Brown