Seattle reliever Trent Thornton was injured while coming off the mound on a ground ball in the ninth inning Thursday night and was carted off the field during the Mariners’ 6-0 win over the Texas Rangers. Thornton was using crutches to get around the Mariners’ locker room after the game and the team did not have an official diagnosis of the lower left leg injury he sustained on the grounder hit by Adolis Garcia with two outs. Thornton said he feared it was a significant Achilles injury and that he would have an MRI on Friday.