Rangers acquire LHP John Gaub from Rays

The Texas Rangers picked up left-handed pitcher John Gaub off a waiver claim from the Tampa Bay Rays on Thursday. He goes on the club's 40-man roster, but was optioned to Triple-A Round Rock. That means the Rangers now have a full 40-man roster.

Here's the Rangers' release on Gaub:

Gaub, 27, was designated for assignment by Tampa Bay on Monday. He was acquired by the Rays in an April 5 waiver claim from the Chicago Cubs. Gaub has spent this season in the bullpen with Triple-A Durham, going 0-1 with one save and a 4.32 ERA (8 ER/16.2 IP) over 16 relief appearances.

Originally a 21st round pick (641st overall) by the Cleveland Indians in the 2006 June draft, Gaub was acquired by the Cubs, along with right-handed pitchers Chris Archer and Jeff Stevens, in exchange for infielder Mark DeRosa on Dec. 31, 2008. He made his major league debut with the Cubs on Sept. 12, 2011, and went 0-0 with a 6.75 ERA (2 ER/2.2 IP) over 4 relief appearances in his only big league action to date. The left-hander has a career 12-13 record and 3.65 ERA (93 ER/229.1 IP) in 187 games/one start over 6 seasons in the minor leagues.