Derek Law, who was one of the Nats most dependable relievers last season will open the year on the IL. He has not seen much action this spring, and said his arm has felt sore after he throws. It is not a major injury, and the plan will be to activate him after the 15 days are up.
This injury also opens up an extra bullpen spot, at least for the short term. Right now, it looks like Orlando Ribalta, Eduardo Salazar, Jackson Rutledge, and Brad Lord are now fighting for three spots in the bullpen.