Double-amputee Oscar Pistorius has been cleared to run any part of the Olympic 4x400-meter relay.

Pistorius was the leadoff runner in the semifinals at the world championships in South Korea last year but the IAAF had raised concerns that his carbon-fiber blades would endanger others in the race. South Africa won silver.

IAAF President Lamine Diack said Tuesday that it's up to the South African federation to decide

"If they want him to run the second leg, he can run the second leg," said Diack. "It is no problem for us."

— Raf Casert — Twitter http://www.twitter.com/rcasert

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