Let's talk relief pitching.
Guaranteed contracts: Doolittle, Madson, and Kelley.
No options left: Romero, Solis, Cole.
Option years left: Grace, Gott, Glover, Adams, Suero, Voth
My guess is that Solis and Romero make the team again, and Cole is on the outside looking in. If Kelley isn't healthy, he might be jettisoned as well. If Glover is healthy, one assumes he makes the team. The last spot is probably a competition between the rest of the guys on the list.
I still see maybe one more reliever being picked up and either a trade of Kelley or he sits because of a medical issue and the Nats aren't on the hook for the final year of his deal.