Right now, there is no bullpen. Rizzo guess that the Nats would be OK with Storen, Stammen, and Roark, plus Thornton and Janssen pitching an inning on veteran smarts, plus Barrett and Treinen improving. Stammen was hurt and Roark got pulled back to starting because Fister and Strasburg got hurt. That leaves only Storen: the one trustworthy bullpen arm. Anyone else if a wish, a hope, and a possible gascanrahan.
The one central mistake: to assume that nobody would get hurt and that Treinen and Barrett, because of their "stuff", could be the next Clippard / Storen.
Still no explanation for the Blevins<->den Dekker trade.