1. At the snap, defensive lineman B1 grabs offensive lineman A1 by the jersey and moves him to the side and tackles ball carrier A2 for a loss.

2. At the snap, defensive lineman B1 stands, reads the play, and sees that ball carrier A1 is moving in his direction. He grabs blocker A1 by the outside of the shoulder pads and pushes him out of the way and tackles A1 for a short loss.

3. A the snap, defensive lineman B1 grabs offensive lineman A1 by the jersey and flings him to the ground. B1 thens tackles the ball carrier for a short loss.

Legal on all three for me.

A defensive player may also:
b.Push, pull or ward off an opponent in an actual attempt to get at the runner

Legal in 1 and 2, also legal in three if the act of 'fling'ing A1 was to make progress towards the ball/ball carrier. The fact he makes the tackle on the runner does not make it legal, the act of doing it to get at the runner does. Also in 2 I have illegal number on A.

REPLY: BDMcC...what do you mean by this?

Bob,

Seems in Sit.#2 both the blocker and the ball carrier are A1.

1. Probably not
2. No
3. Probably

In my best coach's voice:

But one was "1" and one was "01". :D How can that be a foul.

I am pretty sure Mike was not issuing #'s to these players. I also have legal in all 3.

What do we do with Casebook play 9.2.3B(a) then?

NF Case book play to me is not the same as your case play(s).

In the 9.2.3 sit B: the B player is controlling the A player with his hold. Might evenbe preventing A from blocking another player.
In each of your case plays the B player basically just grabs,pulls,holds to get the A player out of his way.
I see a difference here.

I figured that but thought I would have a little fun with it. :)