Enforcement review (where do we mark it off from)

[Rich]

Originally posted by andy1033
1 is enforced from 25 as it was running play so enforced from end of run.

The easy way to think of this is:

If you step off from the 30, you're giving the offense five yards they haven't earned.

The rulebook way is:

The end of the run is the basic spot. It's not an all-but-one exception, so mark the penalty from the basic spot.