Ok, but if a pitcher is definitely better at home and only possibly worse on the road, why go through the hassle of the platoon in the first place? I think that's the stretch of logic by Yost that most of us are concerned about. It's just unnecessary. Keep Bush in the rotation, move McClung to the pen, boot Mota. That seems to make much more logical sense to me than having 6 dudes in the rotation and a struggling pitcher in the pen. Edit: The ultimate impact might be very little, assuming this little experiment doesn't last for more than a few weeks or maybe a month. The projected impact on the rotation will be almost non-existent, but it throws off the habitual patterns of Bush's and McClung's schedule, might put extra stress on the pen, and definitely does not help the pen.