Did we get it right?

[The R]

Had something similar this weekend....A1 drives the lane and shoots. B1 comes running over from middle of the lane and attempts to block shot. A1 returns to the floor and then is run over by B1 whose momentum carried him through A1.

I whistle the foul from lead. My partner tells me the shot went in. So we count the basket and A has a throw-in from the point of the interruption since A1 had returned to the floor and was no longer an airborne shooter.