defining the flanks

[Josh Yoder]

Coach,

I was looking through your definintions of definisive flanks and was wondering what, or how you would define a 50 defense with head up 4's, olb's as 9's, and playing invert coverage behind it with their safeties at 8 yards or less rolling to motion. I am not sure to define that flank as either a 50 or an Ace. Could you help me with that? Hope this makes sense.

[Coach Iannucci]

THe difference between the two ACE or 50 is the playside lber inside the handoff key.

a 5 / 9 with quarters coverage would be a 50 with a lber over the guard

It would be an ace with no lber to that side