The 60 day opens up another 40 man spot. Perkins will likely be 60 dayed. May definitely will. Both give an extra 40 man spot to put Park back on. There's no exposure to waivers for the 60 day (I believe). You cannot use 60 day DL in the offseason, which I suspect is why Park got moved, as they were confident he wasn't going to get claimed. Otherwise, they'd have to DFA someone.