I'm not sure I'd make that trade off, and Pie being an outstanding defender while Patterson is below average makes it easier. I'd probably take Pie with a .300/.400 OBP/SLG over Patterson hitting .350/.400. It's kind of a judgement call. I assume you meant to write .350/.400 Patterson and .300/.500 Pie. I'm never sure how to value defense. It's sort of an intangible, and we really don't know how bad/good Patterson would be as a CF. We just know he's not great at 2b. Of Patterson and Pie, I wonder who has more value in the eyes of other teams? I'd probably trade whichever one would get me the frontline starter we need in any case. No, I meant a .400 SLG for Pie. He's really as good as it gets defensively, enough to make up for that OBP discrepancy. That said, if trading Patterson gets Randy Wolf, and Pie gets Burnett/Harden/Sabathia, it's a much different decision.