Henry Rodriguez told James Wagner of the Washington Post (via Twitter) that he has been designated for assignment by the Nationals. The move is a part of a roster shuffle that will allow the Nats to promote Anthony Rendon and left-hander Ian Krol.
Rodriguez, 26, owns a 4.23 ERA with 9.3 K/9 and 6.1 BB/9 across parts of five big league seasons with the A's and Nats. He pitched 18 innings in relief for Washington this season, posting a 4.00 ERA with eleven strikeouts and 16 walks. Though he might not know where the ball is going, Rodriguez is the definition of a live arm, averaging around 100 miles per hour on his fastball in his last few outings.
Rodriguez was signed by the Athletics as an amateur free agent out of Venezuela in 2003, and was traded to the Nationals in the December 2010 Josh Willingham deal.