From right Britain's Chris O'Hare, Kenya's Nixon Kiplimo Chepseba, Germany's Homiyu Tesfaye, Kenya's Bethwell Birgen, Ethiopia's Mekonnen Gebremedhin and United States' Matthew Centrowitz compete in a men's 1500-meter heat at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013. (AP Photo/Martin Meissner)
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