Barraclough was optioned to Double-A Harrisburg on Saturday.
Barraclough entered Friday's game to face Justin Turner with two outs in the eighth inning with the score tied. After falling behind in the count, the 29-year old surrendered a three-run homer before getting Cody Bellinger to pop out. The righty reliever only faced two batters in his lone appearance since returning from a forearm injury that landed him on the injured list in June. He now owns a career-worst 6.66 ERA and 1.75 WHIP in his first year in Washington. Adrian Sanchez was called up in a corresponding move.