Janieve Russell of Jamaica competes to win the 400 m hurdles final as Shamier Little of the U.S. falls...
Janieve Russell (R) of Jamaica competes to win the 400 m hurdles final as Shamier Little (L) of the U.S. falls down at the IAAF World Junior Championships at Lluis Company Olympic stadium in Barcelona July 14, 2012. REUTERS/Gustau Nacarino (SPAIN - Tags: SPORT ATHLETICS)