Baez is a better defender than Castro, especially when you consider that baez had been playing second at Iowa longer than Starlin had in Chicago. The push is at the plate. Both are very high swing and miss hitters.Hmmm....that's interesting. I would actually prefer to have someone replace Castro at second for defense. I wonder if Baez can do that once rosters expand.Cubs reportedly acquire Austin Jackson from the Mariners for a player to be named later. Outfield help and more speed and Jackson is swinging a really hot bat right now.