Although, assuming that he's more or less going to be the Cardinals starting third baseman, keep in mind that he's replacing a woefully inept platoon previously at that position. Thurston, Barden, K. Green, Freese, and T. Greene with their respective WARs of 0.5, 0.3, -0.4, -0.1, and 0.1 make the upgrade to DeRosa slightly better still. Nothing earth shattering, but better nonetheless.