Dotel is out until at least May I think. Baez, Politte, and Howry aren't saves guys, which is what you're going to need. You might need to pray for injuries to closers and jump on their replacement.
Unfortunately trading for a closer will cost you, and I'm not sure it will be worth it. As long as you stay active you should be able to plug various closers in to help you out. Watch for shaky closers to get the boot.
Is Cotts gone already?