Find the illegal block! (video play)

[Reffing Rev.]

Originally Posted by Ray_from_Mi

I believe this could be not only BIB, but also a crackback block. Correct me if that's not the case.

Can someone please define what people mean by crackback block. I can't find an illegal crack back block anywhere in my rule books. I hear it a lot, but cant find it anywhere.

Several years ago my first season doing varsity I was working at BJ and A ran a sweep to my right and I was keying off that side receiver who on the snap made a b line towards the B linebackers. I had my eye on him as he hit with his shoulder on the numbers on the front of the jersey (at full speed with great force) the team B linebacker who was running full speed with his head turned watching the ball carrier. Needless to say the linebacker had the wind knocked out of him and trainers and the hc came out to help him off the field and the hc looked straight at me and yelled the entire way out to the field that I missed the most obvious crack back block he had ever seen. At halftime we talked about the play and our wh asked what I saw and I told him just what I said, and he said good call. We left our lockerroom and the hc of that team was in the hallway outside the gym and as we passed him by he continued at me, You (words I should not repeat) I have never seen an official miss such an obvious crack back block." And our wh who was about 75 years old said, "Hey Bob he didn't miss anything, but you missed the definition of an illegal block." Needless to say Bob watched the second half from the team school bus in the parking lot.