Archer Khatuna Lorig, seen here during the London Archery Classic last October, helped actress Jennifer Lawrence prepare for her role as Katniss Everdeen in The Hunger Games. Dean Mouhtaropoulos/Getty Images hide caption

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U.S. Olympic Equestrian rider Phillip Dutton jumps with Zeizos in West Grove, Pa., in this 2010 photo. Dozens of horses will fly from America to England for the 2012 Summer Olympics. Don Emmert/AFP/Getty Images hide caption

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LaShawn Merritt crosses the finish line first, in the men's 4x400-meter relay at the IAAF World Athletics Championships in Daegu, South Korea, Sept. 2. Once banned for doping, Merritt has been cleared to run in London next summer.

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South African runner Oscar Pistorius, right, runs in the 400 meter race in France, July 8, 2011. His time in a race in Italy Tuesday was good enough to send him to the World Championships. Franck Fife/AFP/Getty Images hide caption

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