NCAA proposes changes to targeting, substitution rules in football

[KnoxOfficial]

I like the timing rule for substitutions. Far too often I've seen those big boys up front on the defensive line look like they are about to fall over which is just a recipe for disaster. Allowing them to have a small window to substitute without any concern of a snap seems like an effective yet mostly unobtrusive way to help prevent injuries for players who are exhausted but can't run the risk that a team could snap the ball the moment the ball is spotted.