The IOC said Wednesday that Carter tested positive for methylhexaneamine, a banned stimulant, in re-analysis of samples from... News of Usain Bolt’s torn hamstring spread among runners at the U. Olympic track and field trials as fast as the lanky Jamaican ran in sweeping the 100- and 200-meter sprints at the Beijing and London Olympics. Voting has begun for the athlete of the year in track and field, but the man with the five fastest times for the 100 meters in 2015 will not be up for consideration. Usain Bolt's final gold medal at the Bird's Nest came gift-wrapped. The World's Fastest Man made it 3 for 3 in Beijing again, leading the Jamaicans to a runaway win Saturday in the 400-meter relay that came easy... team was supposed to shine at the track and field world championships in Beijing this week. If Justin Gatlin seemed distracted on the medals podium at the world championships on Monday, he had good reason.