Allyson Felix stayed in line to become the athlete with the most medals in world championships history when she helped the American 4x100-meter relay team qualify for the final later Saturday. Felix has won 14 medals at the world championships and can move up to 16 if she runs the 4x400 relay and the United States wins medals in both events. Trey Hardee of the United States hit the third hurdle and clattered into the next one during the 110-meter hurdles to end his medal chances in the decathlon at the world championships. In the first of five events on the final day of the two-day competition, Kevin Mayer of France set a third personal record to easily stay atop the standings with 5,485 points. The Jamaican great is looking for one more gold medal in the 4x100-meter relay at the world championships.