When Aries Merritt ran a then-personal best 13.09 seconds in the 110-meter hurdles in 2007, he was considered one of the United States' most promising young performers. Receiving that label at age 22 was a complement. Keeping the label for four years, however, was neither complementary, nor satisfying for Merritt. But after making some off-season changes, Merritt achieved everything he was supposed to, and more, in 2012. Check out a new profile of Merritt and learn more about the new world record-holder.