A has the ball at their own 30 yd. line. A elects to a long pass to a receiver running a route along the sideline. Defensive Back has good coverage. On film, it does not appear the defender caused the receiver to go out of bounds at the B25 yard line, but the receiver does go out of bounds for three or four steps as the ball is in the air. The receiver comes back in bounds, gets his hands on the pass but drops the ball for an incomplete pass at the B20 yardline. Should this be flagged for Illegal Participation and if so, since it was incomplete, would the enforcement spot would be the previous spot?
Same scenario, but now the ball is caught. Do we have the same enforcement spot as above because the receiver was/is considered out of bounds, i.e. we don't have a completed pass? Or do we enforce it from the spot he went out of bounds?