The "best" athlete is good at anything they step into, even for the first time. Oftentimes when it seems that someone is a natural it is because they've been trained in a way that prepares them to do anything well
The NFL just agreed to pay out $765 million for injury settlements, medical monitoring, and care for former players who suffered concussions and other brain injuries. While the NCAA may be turning a blind eye, college athletes are starting to take notice.
In the 2013 NFL Draft, sheer athletic talent will seduce several professional football coaches, general managers and owners into making a terribly expensive errors. At the highest level of competition in any sport, athletic skill is not enough.