I'm very surprised.
UPDATE -- There's going to have to be a roster move to make room for Justin Smoak on the 40 man roster. The choices would seem to be Tommy Hunter to the 60 day disabled list (making him ineligible to return to the majors until late May), or Brandon Boggs or Pedro Strop being designated for assignment.
UPDATE II -- Or Omar Poveda to the 60 day d.l., which seems like the most likely choice. I'd forgotten about Poveda.