For all we know Reyes won't be out much longer. If he was going to be out a month or more I can understand bringing up Muni because you could always option Goins to keep him on the roster, but if Reyes is only going to down for a couple weeks I wouldn't want to risk losing Muni, who is versatile, and while maybe not a great hitter, makes pitchers throw a lot of pitches, for only a couple games.