Kimberlyn Duncan, left, beats Allyson Felix to the finish line in the senior women's 200-meter dash final at the U.S. Championships athletics meet on Sunday, June 23, 2013, in Des Moines, Iowa. Duncan... more 
Kimberlyn Duncan, left, beats Allyson Felix to the finish line in the senior women's 200-meter dash final at the U.S. Championships athletics meet on Sunday, June 23, 2013, in Des Moines, Iowa. Duncan won the race in 21.80 seconds. (AP Photo/Charlie Neibergall) less 
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Associated Press | Photo By Charlie Neibergall
Sun, Jun 23, 2013 7:17 PM EDT