Samantha Stosur, Kevin Harvick and the Buffalo Bills provided three more examples this weekend of one of sports' enduring truths: Just because you won, it doesn't mean you're the best.
Nowhere is this more accurate than in track and field.
In this sport—where the difference between a gold medal and a fifth-place finish can be a literal blink of an eye—there is always room for argument over who is really the best. Zero-tolerance rules regarding false starts and fouls increase the likelihood for a fluke circumstance in which a world leader is absent from a championship event. And because the Olympics are only held once every four years, and the World Championships every two years, there is no official annual stage on which the world's best track athletes are crowned.
This means that the person who crosses the finish line first, or clears the highest height or reaches the longest distance isn't always the one we call the best.
A week removed from the 2011 Track & Field World Championships in Daegu, South Korea, a number of athletes who won gold medals there still have a ways to go before being considered truly the best at what they do.
Here are 10 gold medalists from Daegu with a lot to prove in 2012: