Lashinda Demus of the U.S. competes in the women’s 400m hurdles round 1 heat during the London 2012 Olympic Games at the Olympic Stadium

Lashinda Demus competes in the 400 hurdles. (Lucy Nicholson/Reuters)

Lashinda Demus competes in the 400 hurdles. (Lucy Nicholson/Reuters)

Lashinda Demus of the U.S. competes in the women’s 400m hurdles round 1 heat during the London 2012 Olympic Games at the Olympic Stadium August 5, 2012. REUTERS/Lucy Nicholson (BRITAIN – Tags: SPORT ATHLETICS OLYMPICS)