Basically, the Worst of the Best. For example, the worst NFL player ever... it's just so interesting that his skill level would be almost godlike compared to a normal person or even a college athlete, but at the NFL level he looks like a total clown. Not sure what this means for the rest of us... but it seems to have a little resonance.
Especially since our lives are so based on competition. Our romantic lives, our jobs, everything comes through competition... to some extent, at least, perhaps not totally. So there's something relatable about that person who fails on the grandest stage. You are embarrassed for him, yet on a deep level you know you probably have more in common with him than with the Hall of Famer like Tom Brady who practically never makes a mistake on the field.