Claressa Shields
Photograph By Robert Johnson/Icon SMI
Claressa Shields lands a left to the face of Tika Hemingway during the U.S. Olympic women's boxing trials in Spokane, Wash., in February. The teenager from Flint, Mich., won the bout 23-18 to win the trials and earned the right to represent the United States in the world championships in China. Her top-eight finish at worlds gave Shields a spot in the 2012 London Olympics.