By Mitch Phillips

TOKYO (Reuters) -The United States grasped their second chance to progress to the final of the men’s 4×400 metres relay after comfortably beating Kenya in a slightly surreal winner-takes-all run-off at the World Athletics Championships on Sunday.

South Africa were unable to do the same as they missed their target in their against-the-clock rerun in the 4×100 metres.

The U.S. and Kenya were given the opportunity to race for an additional place in the final later on Sunday after both were judged to have been impeded at a changeover as they failed to qualify from Saturday’s heats.

In the strange atmosphere, with a scattered crowd watching the morning events of the decathlon, the teams ran in their original lanes – the U.S. in three and Kenya in seven.

Despite the quick

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