Unless there’s another trade, or someone has a really terrible spring training, the hitting portions of the roster (assuming the dreaded seven-man bullpen) seem to be set already:
That’s thirteen. Orr has options left, I think, so someone could beat him out. I’m not sure if Johnson can be optioned out anymore; he’s been in the minors awhile. At any event, there’s not a lot of give in the roster barring a trade.