Russia's Antonina Krivoshapka crosses the finish line ahead of DeeDee Trotter of the U.S. to win their...
Russia's Antonina Krivoshapka (L) crosses the finish line ahead of DeeDee Trotter of the U.S. to win their women's 400m semi-final at the London 2012 Olympic Games at the Olympic Stadium August 4, 2012. REUTERS/David Gray (BRITAIN - Tags: OLYMPICS SPORT ATHLETICS)