London Olympics Athletics Women

Tirunesh Dibaba, right, won her heat. (Lee Jin-man/Associated Press)

Tirunesh Dibaba, right, won her heat. (Lee Jin-man/Associated Press)

Ethiopia’s Tirunesh Dibaba during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Tuesday, Aug. 7, 2012. (AP Photo/Lee Jin-man)