Double trouble? Ankle injury has Felix on edge for trials (Yahoo Sports)

Allyson Felix is supposed to be cementing her track legacy this summer. Instead, she comes into U.S. Olympic trials hobbling, unsure and simply hoping for third place. On a slow, painful comeback from a freak injury to her right ankle, the most decorated female sprinter in U.S. history will have to grit out spots on the 200 and 400-meter teams to have a chance to become the first woman to capture that double at the Olympics.