Images from Thursday's action at the World Athletics Championships
United States' Allyson Felix, right, competes in a women's 200-meter heat at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Thursday, Aug. 15, 2013.Ivan Sekretarev/The Associated Press
Shelly-Ann Fraser-Pryce of Jamaica runs in her 200 metres heat during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.KAI PFAFFENBACH/Reuters
Jamaica's Shelly-Ann Fraser-Pryce in a women's 200-metre heat at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Thursday, Aug. 15, 2013.Ivan Sekretarev/The Associated Press
Bulgaria's Ivet Lalova looks at the timing board after competing in a women's 200-metre heat at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Thursday, Aug. 15, 2013.Martin Meissner/The Associated Press
United States' Inika Mcpherson rests against a hoarding surrounding the track as she competes in the women's high jump qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Thursday, Aug. 15, 2013.Ivan Sekretarev/The Associated Press
Brigetta Barrett of the U.S. competes in the women's high jump qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.DOMINIC EBENBICHLER/Reuters
Maayan Furman-Shahaf of Israel competes in the women's high jump qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.DOMINIC EBENBICHLER/Reuters
Leslie Copeland of Fiji competes in the men's javelin throw qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.KAI PFAFFENBACH/Reuters
Thomas Rohler of Germany competes in the men's javelin throw qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.KAI PFAFFENBACH/Reuters
Turkey's Fatih Avan competes in the men's javelin throw qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Thursday, Aug. 15, 2013.David J. Phillip/The Associated Press
Gabriel Wallin of Sweden competes in the men's javelin throw qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.KAI PFAFFENBACH/Reuters
Reese Hoffa of the U.S. competes in the men's shot put qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.DOMINIC EBENBICHLER/Reuters
Dylan Armstrong of Canada competes in the men's shot put qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.KAI PFAFFENBACH/Reuters
Reese Hoffa of the U.S. competes in the men's shot put qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.DOMINIC EBENBICHLER/Reuters
Pavel Lyzhyn of Belarus competes in the men's shot put qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.DOMINIC EBENBICHLER/Reuters
David Storl of Germany competes in the men's shot put qualifying round during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013.DOMINIC EBENBICHLER/Reuters
Robert Grabarz of Britain clears the bar in the men's high jump final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013Reuters
Mabel Gay of Cuba competes in the women's triple jump final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013Reuters
Abeba Aregawi of Sweden celebrates with her national flag after winning the women's 1,500 metres final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013Reuters