Penalty or not?????

[dumbref]

Originally Posted by JugglingReferee

So, in other words, if the play happened as in the OP, you have OPI.

But if it happened some other way, you likely have something other than OPI.

Also, we must see every play in its entirety.

Agree on the wink!

I'm saying, I could have a double foul - Illegal use of hands or contact if the defender cut him off and A is no longer a potential blocker and OPI if A subsequently pushes B to the ground.

I could also visualize this as incidental contact with no foul at all. But with the push by A (as described), I think you have OPI at the very least.