Football is a different case from other college sports for one main reason: physical development. Your average NFL squad has players that are much bigger and stronger at every position.<p>A receiver who is 5&#x27;9&quot; has a fighting chance to be successful in many college conferences where there aren&#x27;t monstrous cornerbacks but absolutely no shot in the NFL where size is a requirement. Undersized and underdeveloped players also risk significant injury by going pro too soon. College players need at least a year or two to build up the physical condition to compete at the next level.<p>This is the reason why the worst NFL team would easily crush the best college team. The college team just wouldn&#x27;t be able to handle the size of your average NFL squad.