Years ago pitchers could get stashed in the bullpen and may or may not have produced in the future as a key player. In today's game of specialized LOOGY, two long men, seven power, setup, and closer, the chance of hiding bullpen arms is slim. It forces teams to go one short and unless you have three starters that eat up 7 innings an outing, those rule 5 stashers have to be used.
I suspect that one or two players gets picked up and barely makes it out of spring training. I give it best of end of May where the player is back in the Orioles system.