Matt Thornton has felt continued improvement with his strained right oblique. Thornton suffered the injury Sunday, but it appears that he'll be available out of the bullpen soon. "He feels improved, just by going through range of motion type movements," Red Sox manager John Farrell said Tuesday. "If it's not really restricted, he'll play light catch up to 90 feet. A roster decision may have to be made if we don't see further progression by tomorrow. He's improved and we want to give him another day."