4. Thad Ward
Thad Ward was the first overall selection by the Nats in the recent Rule 5 draft, and he can prove why he deserves that kind of prestige. Ward has an extremely slick slider with a plus sinker, a combo that could cement him as a piece of the bullpen heading forward. It will definitely be interesting to see how he performs in spring training, but the hype is there and his upside within the organization is huge.