On February 21, , Benson signed a minor league contract with an invitation to spring training with the Texas Rangers. Benson made the Opening Day 25 man roster as one of the Rangers' starting pitchers, but after a short stint on the disabled list, he was relegated to the bullpen in long relief. Benson had made over 200 consecutive starts before the move to the bullpen. After proving ineffective as a sporadic reliever upon his return, he was outrighted to the Rangers' Triple-A affiliate, the Oklahoma City RedHawks, on June 9, 2009.