Titans running back Chris Johnson has talked endlessly this season about his speed. Whether it's challenging the Boston Celtics' guard Rajon Rondo to a race, insinuating that he could hang with Usain Bolt in a race, or laying down today's gauntlet to Chad Ochocinco, Johnson made it know just how fast he thinks he is.
Well,you can't deny he is fast, but his self-promotion got us thinking about the fastest athletes of all-time. This is a list specifically designed for professional athletes, so Usain Bolt, Michael Johnson and other Olympic track stars are excluded.
These athletes come from different backgrounds, including football, baseball, basketball and the soccer. So who is the fastest athlete of all-time?