With rookie reliever Abel de los Santos joining the team on Monday, the Nationals made a pair of moves to clear up a roster spot. They transferred Jayson Werth – who is rehabbing a broken left wrist – from the 15-day disabled list to the 60-day DL. They also optioned struggling right-hander Blake Treinen to Triple-A Syracuse.
Werth is playing with the Syracuse Chiefs on Monday night as he continues his road back. He should be able to return soon, possibly within the week, but bringing him to Washington will require a corresponding move on the 40-man roster.