Interference on the On-Deck-Batter?

[cowbyfan1]

In this case I would do the same and just award the runner(s) the appropriate base(s). Since F2 did not go after it I am not going to reward the defence. If F2 had gone after it and the runners were trying to advance beyond their allowed base, you could have a case for interference by the the on deck and the batter would be out and the runners return to their original base.