Career Highlights: After dealing with a bone chip in her left leg and still qualifying for the 2008 Beijing Games, a healthy Trotter could be a force to be reckoned with in London. This will be her third appearance in the Olympics, and the 2004 gold medalist in the 4x400 relay will be looking to add to her medal collection. Trotter has had success dating to her days at the University of Tennessee, where she was the NCAA runner-up in the 400 in 2003 and took a step further in 2004 by becoming the NCAA outdoor 400 champion. She was the USA outdoor champion in the 400 in 2007 and is a two-time USA indoor champion. Trotter often wears face paint and glitter during competition, calling it her "war paint." She is the founder of Test Me I'm Clean, a charity that focuses on fighting the abuse of steroids and other performance- enhancing drugs. Trotter has become one of the best 400 runners in the world, and she will attempt to establish herself with a medal of her own.