Definitely time to clean house based on this decision. Maybe then this team will win some games. Seriously as far as this decision goes and why it may be a good decision, there are 2.5 seasons of data that suggest that Dave Bush pitches appreciably better at Miller Park. Whether that can be translated into a succesful platoon situation remains to be seen. You have made up your mind that its a bad idea, I suspect partly based on the person who (you believe) made the decisions...Yes -- This is a very classic Yostian decision and misuse of data. Please don't insult our intelligence by suggesting that Yost making this descision does not impact your feelings on it. Beyond that, I suspect Suppan's status is playing into this a little bit as well, along with the bullpen. One of these guys is being pushed to the pen, and this arrangement seems to be designed largely around making sure they select the right one. Are they 'wasting a roster spot' in the event that Suppan cannot come back and pitch effectively and both of these guys will be needed to start? BTW, due to the impact on teh roster, of course Doug Melvin was involved (and therefore should be fired). It will obviously affect both guys' routines, but in the end I would suspect the impact will ultimatley be on 1 or 2 starts. Those couple starts could prove to be a huge disaster. then again, it could also work out. Until you can provide eveidence to suggest that upsetting the routines is something they can't handle and the results will be bad, I'm not sure you can conclude it is a bad idea based only on that, or how it is a misuse of data. Over the next couple weeks it'll settle itself - either it will work out and they'll stick with it, or one guy will stay in the rotation, and one guy will end up in the pen. Is/Was there another trade in the works that may have played a role in this decision? I don't know, and neither do you, but it certainly seems possible. We are talking about Dave Bush and Seth McClung here, not Ben Sheets and CC Sabathia. I would be interested to know what the expected W-L impact of this is.