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Sandbox for grownups: long jumpers hit the dirt

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Russia's Yekaterina Bolshova competes in the women's pentathlon long jump at the 2012 IAAF World Indoor Athletics Championships at the Atakoy Athletics Arena in Istanbul on Friday.

Pawel Kopczynski / Reuters

Luis Felipe Meliz of Spain.

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Estonia's Mikk Pahapill.

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China's Su Xiongfeng.