I was thinking about a variation of this. Put Chapman in the rotation so that he gets accustomed to the schedule and preparation, etc., but severely limit his innings/pitches early on. He'd be going three or four innings and Leake would be his semi-automatic reliever. You could say that a bullpen spot is eaten up that way, but if Leake were able to take the game into the eighth or ninth--which he certainly should be--he would also spare a lot of bullpen innings. I do like the idea of Chapman throwing 100 mph twice through the batting order, then Leake following with his Arroyo-like assortment.