DETROIT - The White acquired right-handed pitcher Brett Myers and cash considerations from the Houston Astros on Saturday. The Sox gave up two prospects and a player to be named later.
The Sox gave up right-handed pitcher Matt Heidenreich, left-handed pitcher Blair Walters and a player to be named later.
Myers, 31, is 0-4 with a 3.52 ERA and 19 saves over 35 games this season with Houston. He ranks third in the National League in save percentage (90.5, 19-21) and is tied for sixth in saves.
White Sox general manager Ken Williams said that Myers was added for bullpen depth, not to close games despite his experience in the closer's role.
"He's going to join the bullpen. Ultimately the ninth inning is [manager] Robin Ventura's call,'' Williams said.
"I felt the men in that clubhouse deserved a little help. This is in no way anyone wavering on our confidence in Addison Reed. But it's got to the point where it's time to make a push.''
Myers' career record over 11 seasons with the Phillies and Astros is 94-89 with a 4.22 ERA and 40 saves over 342 career games. He has started 249 games.
Heidenreich is 9-4 with a 3.95 ERA over 18 starts with Class A Winston-Salem and Class AA Birmingham. He was an 11th-round draft pick in 2009.
Walters, is 4-6 with a 3.96 ERA over 18 starts with Class A Kannapolis and Winston-Salem. He was an 11th-round pick in 2011.