RIO de JANEIRO — Maybe, in the dawn before time, there was a human specimen who, racing away or toward the likes of sabertooth tigers or wooly mammoths, could run for all he was worth and do it really, really fast.
For now, we have Usain Bolt.
Adding to his legend, Bolt roared to gold in the men’s 100m Sunday night at Olympic Stadium, crossing the line in 9.81 seconds.
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