It's easy to pick specific examples. Zimmerman may have good control, but we'll really never know until he pitches in the bigs again. It's much easier to avoid walks in the minors. Look at how Liriano struggled with his control last season. For every Josh Johnson there are several Lirianos. My point was not that you can't be good when you come back, but that if you have peaked already as a player, there is no way you would have significantly better control, pitches, and splits after a massive year-long injury. I can almost guarantee you that admin did not intend to have pitchers benefitting from having an injury. The two players mentioned in this thread were helped enormously by getting hurt - that should never happen.