Carp was the move because the Rangers are committed to looking at Ryan Rua at first base for the remainder of the season. Carp was claimed off trade waivers from the Red Sox at the beginning of August, but was just 5-for-40 in a part-time role at first base.
"He didn't really get it going but that didn't come into play," manager Ron Washington said. "With all the young kids we want to see, there just wasn't a whole lot of at-bats for him. We needed to make a roster move. It's unfortunate because he is a pro."
With Carp gone, the Rangers are without two of their left-handed bats as Jim Adduci is on the seven-day concussion disabled list and not eligible to come off until Friday.
T.R. Sullivan is a reporter for MLB.com. Read his blog, Postcards from Elysian Fields, and follow him on Twitter @Sullivan_Ranger This story was not subject to the approval of Major League Baseball or its clubs.