The Rangers selected Gonzales' contract from Triple-A Round Rock on Friday.
Gonzales elected free agency after being outrighted to Triple-A on Aug. 2 but returned to the Rangers on a minor-league deal shortly afterward and will now reclaim a spot in the big-league bullpen, replacing Ben Peoples. Gonzales has given up just one run in six MLB innings this season, but his 7.57 ERA and 1.87 WHIP at Triple-A suggest that he'll be limited to low-leverage work with the Rangers.