If he had trained or even had the appropriate footwear, it's fair to assume he'd have managed to run faster than Worthy. But that's the only time we've seen Bolt run a 40-yard dash, and Worthy can ...

Opinions expressed by Forbes Contributors are their own. Cory Mull reports on emerging track and field topics across the U.S. It has been just over eight years since Usain Bolt last graced the ...