The rub on Mejía is that he can't be optioned so he has to be on a major league 25-man roster. Eventually, a spot will be found where either he gets regular work or is outrighted to the the minors where he gets regular work. If he is outrighted to the minors, he will have to earn his chance at promotion where the club will have to add him back to the 40-man roster. The inflexibility of being "out of options" had a great deal to do with the DFAs of Mejía, Morin, and Magill. Littell, Duffey, Harper, Stashak, Smeltzer, Stewart and Poppen all could be sent down and recalled in ten days. Switching out the multiple innings guys certainly makes sense.