A player on 2nd base attempted to advance to 3rd base on a pitch that was ruled ball 4 to the batter. The pitch was low and in the dirt and had to be blocked by the catcher. The batter who had just drawn the walk dropped the bat and ran to 1st base. The catcher blocked the ball and then had to get over the bat to get the blocked ball and attempt a throw to 3B. Is there any interference on this play? If so, what is the ruling on the runner and batter?