I too would rather see Williams start since he's already on the 40-man roster (it's only one meaningless game; who cares if he gets lit up). By adding Walrond to the roster, he'd need to be exposed to waivers in order to take him back off during the offseason. I think it's much more likely that he'd be claimed on waivers than it would be for someone else to take him in the Rule 5 draft if he's kept off the roster. So basically, I think they're increasing the chances of losing him for the sake of one meaningless game. Of course, if they don't think he has a major league future and are planning to release him in the offseason anyway, then it doesn't really matter.