Edgy MD wrote: The Mets do it a lot. The notion is that, now that anything over five innings from a starting pitcher is a bonus, bigger bullpens are needed, and yo-yoing creates more available fresh arms. I mostly reject that notion as (1) a pitcher who gets sent down for a few days and comes back has the appearance of freshness, because you haven't seen him in a game, but (a) that doesn't mean he hasn't been used in AAA in the interim, and ( he's got the additional wear and tear from the round trip; and ( pitchers called to the big leagues need to make adjustments in order to get outs consistently, and they never get to do that if they get sent down after one or two outings. So, yeah, I agree that there is some degree of service-time manipulation in the yo-yo game. But the knock would be the Mets are doing it with guys who aren't good enough to be on the 25 man in the first place not turning the 25 man into a de facto 28/29 man ….