Wednesday's action at the world track and field championships
Athletes compete in the men's 50 kilometre race walk at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013.Ivan Sekretarev/The Associated Press
Ireland's Robert Heffernan cools down as he competes in the men's 50 kilometre race walk at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013.Ivan Sekretarev/The Associated Press
Robert Heffernan of Ireland celebrates winning the men's 50 km race walk final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.DENIS BALIBOUSE/Reuters
Finland's Jarkko Kinnunen gets help as New Zealand's Quentin Rew, right, catches his breath after finishing the men's 50 kilometre race walk final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013.David J. Phillip/The Associated Press
Gulfiya Khanafeyeva of Russia competes in the women's hammer throw qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.DOMINIC EBENBICHLER/Reuters
Sophie Hitchon of Britain competes in the women's hammer throw qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.DOMINIC EBENBICHLER/Reuters
Kathrin Klaas of Germany competes in the women's hammer throw qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.DOMINIC EBENBICHLER/Reuters
Gulfiya Khanafeyeva of Russia competes in the women's hammer throw qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.FABRIZIO BENSCH/Reuters
Romania's Bianca Perie competes in the women's hammer throw qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013.Matt Dunham/The Associated Press
Bianca Perie of Romania competes in the women's hammer throw qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.FABRIZIO BENSCH/Reuters
Luis Rivera of Mexico competes in the men's long jump qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.KAI PFAFFENBACH/Reuters
George Kitchens of the U.S. competes in the men's long jump qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.KAI PFAFFENBACH/Reuters
Fabrice Lapierre of Australia reacts after competing in the men's long jump qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.KAI PFAFFENBACH/Reuters
United States' Dwight Phillips competes in the men's long jump qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013.David J. Phillip/The Associated Press
France's Salim Sdiri competes in the men's long jump qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013.David J. Phillip/The Associated Press
Michel Torneus of Sweden competes in the men's long jump qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.FABRIZIO BENSCH/Reuters
Matthew Centrowitz of the U.S. runs in the men's 1,500 metres heats during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.DENIS BALIBOUSE/Reuters
Athletes compete in the women's 5,000 metres heats during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 14, 2013.KAI PFAFFENBACH/Reuters
Athletes compete in a women's 5000-metre heat at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013.Martin Meissner/The Associated Press