Could true freshmen quarterbacks be heartbeat away for Tigers, Tide?

No one wants to see it, but the coaches have to think about it and plan for it just in case.
What if Chris Todd sees DeAngelo Benton running free behind the Louisiana Tech free safety and lets fly and, while the Jordan-Hare crowd lets loose a primal scream, Todd’s right shoulder screams in pain? Who’s the first quarterback off the Auburn bench?
Wildcat wild-card Kodi Burns? Perennial bridesmaid Neil Caudle? Or rookie phenom Tyrik Rollison?

What if Greg McElroy spots Julio Jones with a step on a Virginia Tech corner, plants to throw a strike to the post and instead gets struck down by a blitzer from the blind side?