Teams are built to sustain a few injuries at least good ones. The mets haven't had degromm All year, Now down Scherzer, Megill, Mccann, and May. Yet they are still 28-15. Although I do expect them to slow down significantly until they get at least megill back sometime in june hopefully.
The Yanks should be fine, they right now are loose on the lead, I don't think the rays are any good, and the team I would fear in the AL East if I were the Yanks is toronto, and they are off to a slow start.
I'm kind of unhappy Boston is getting it together, because I really wanted to get some of the players off there roster, but they might be in a playoff race for a wildcard in my opinion.