I have pondered this question for what has seemed like eternity and realized it was about 2.54 seconds.

I have realized that Hillman is an absolute genious, he is keeping his best 'relever' ( I will not call anyone a closer, anymore, because that is asking for miss use) to back his best starter. Simple as that, a CY Young award winner needs more W's....Soria will give that to you, but only when Greinke is pitching....yeah, yeah ....that has to be the reason.

Right?