Roark entered the game in the sixth inning and pitched two shutout innings, striking out one. He was not upset that he is back in the bullpen.
"It's my job." he said. "Whatever they need out of me, I'll do. I take pride in that. Anything to help out the team."
Roark has appeared in 19 games and is 3-1 with a 3.25 ERA.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the Time. He also can be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.