I have a pretty basic question about the zone read option. I understand that on the base option play, the QB reads the backside DE. If the DE "crashes down," the quarterback keeps. If the DE "stays home," the QB hands off.
What happens when:
1) the defense is in a 3-4? Is the backside OLB the read man?
2) the defensive line is shifted playside, with the backside DE playing more inside? Is this an automatic keeper?
3) a safety walks up to the backside?
4) the backside corner blitzes?
5) stunts are employed?