Tyson Gay's Olympic Gold Ambition - CNN
Can Bolt be beaten? Gay's golden Olympic goal
(CNN) -- There's a fine line between success and failure in top-level sports, perhaps nowhere more so than in track and field sprint events.
Tyson Gay knows how true that is.
The American was a triple world champion in 2007, but since then has seen Usain Bolt usurp him in the most spectacular way with records and titles galore.
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