Why? Because not that many freshman play. If you play and get stats your chances are very high.
Who was the freshman All-American at QB? Sean Mannion at Oregon St. Never mind that he threw more Int's than TD's or ranked 69th out of 115 qualifying in passer rating... He was a freshman All-American so he must be better than everyone else! LOL as he might be the worst QB in the Pac-12, which is saying a lot.