Illegal Use of Hands/Pass Interference/Nothing

[golfdesigner]

NHFH Rule Code for all Situations (in all cases a legal forward pass crossing the NZ is thrown by A):

Situation 1:
A88 lines up as wide receiver... starts downfield, approaches DB cuts as he approaches DB, (A88 is no threat to block DB) DB waits until A88 is next to him, gives him a shove causing A88 to change his route (DB is taught this technique to help safety). Ball has not been thrown at time of contact. Pass crossing NZ is thrown, to other side of field. What do you have if anything?

Situation 2:
Same as Situation 1 except A88 loses balance after contact by DB and falls to ground. What do you have if anything?

Situation 3:
A89 lines up as tight-end; A88 lines up as wide-out other side of line. Both A89 and A88 go 3 yards downfield at snap and do sharp turn-in for a crossing pattern. B51 playing middle linebacker knocks A89 off balance as he cuts in front of him. A10 drops back to pass, throws pass crossing NZ. What do you have if anything?

Thanks for any feedback/comments.