(130819) -- MOSCOW, Aug. 19, 2013 (Xinhua) -- Alysia Johnson Montano (L) of the United States falls down when crossing the finish line during the women's 800 metres final of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium in Moscow, Russia, on Aug. 18, 2013. Alysia Johnson Montano ranked the 4th with 1 minute 57.95 seconds. (Xinhua/Li Jundong)