The Nationals have released left-hander Zach Duke, according to Adam Kilgore of the Washington Post (on Twitter).
Duke, 30, was designated for assignment last week after posting an 8.71 ERA in 20 2/3 frames for the Nationals this season. He was an asset for the team in the final month of 2012, allowing just two runs in 13 2/3 innings of work out of the bullpen in September. The former Rookie of the Year candidate has just a 4.84 ERA with 4.5 K/9 and 2.5 BB/9 in 990 2/3 innings since his tremendous 2005 debut campaign.
