The Nationals announced today that they have called up left-handed reliever Mike Gonzalez from AAA Syracuse and have optioned righty reliever Ryan Perry to AAA in a corresponding move. The Nationals signed Gonzalez on May 8th, and he reported to extended Spring Training in Viera, Florida before pitching briefly in the minor leagues. As a member of the Orioles and Rangers last season, Gonzalez threw to a 4.39 ERA with 21 walks and 51 strikeouts in 53.1 IP.
The Nationals acquired Perry in exchange for reliever Collin Balester in a trade with the Detroit Tigers this offseason. Perry has a 10.13 ERA this season, but has thrown only 8 innings.