The Texas Rangers designated 41-year-old reliever Arthur Rhodes for assignment to clear a spot on their 25-man roster for newly acquired reliever Mike Adams before Tuesday's game at Detroit.
Texas got Adams from San Diego in a trade Sunday.
Rhodes, who made his major league debut for Baltimore in 1991, was 3-3 with a 4.81 ERA in 32 appearances for Texas this season. The Rangers have 10 days to trade, release or outright Rhodes to the minor leagues.
The AL West-leading Rangers last winter signed Rhodes to a one-year contract that guaranteed him $1.4 million, plus incentivies. There was also a $4 million club option for 2012.
Adams was 3-1 with a 1.13 ERA in 48 games for the Padres, where opponents hit only .155 against him. The right-hander had 49 strikeouts and nine walks.
Texas acquried Adams and Baltimore right-handed reliever Koji Uehara in trades over the weekend. Uehara made his debut with the Rangers on Sunday with two strikeouts in a scoreless inning at Toronto.
Because Adams and Uehara routinely get left-handers out, Rhodes became dispensible. Left-handed hitters are hitting only .135 this season against Uehara and .194 against Adams.
Rhodes was an All-Star for the first time in 2010, when he appeared in 69 games for Cincinnati, his most since 2001. He had a 2.29 ERA in 55 innings with 50 strikeouts and 18 walks.
The left-hander has an 87-69 record with 33 saves and a 4.08 ERA in 881 career games for Baltimore (1991-99), Seattle (2000-03, 2008), Oakland (2004), Cleveland (2005), Philadelphia (2006), Florida (2008), Cincinnati (2009-10) and the Rangers. He missed the 2007 season after Tommy John surgery.