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2012 U.S. Olympic Gymnastics Team Trials - Day 1

SAN JOSE, CA - JUNE 28: Jonathan Horton competes on the pommel horse during day 1 of the 2012 U.S. Olympic Gymnastics Team Trials at HP Pavilion on June 28, 2012 in San Jose, California. (Photo by Ronald Martinez/Getty Images)

Olympic comeback kids

Just call it a comeback. The recent swimming, track and gymnastics trials offered plenty of stories of athletes overcoming a setback -- ranging from injuries to drug-related suspensions to gunshot wounds -- to earn their ticket to London. -By Pauline Vu