Workman, who is preparing for the 2015 season as a reliever, is not guaranteed a spot in Boston's bullpen, the Boston Herald reports.Workman was a starter for much of 2014, but results were not good. The change to the pen, the club hopes, will allow Workman to throw harder with more consistency over shorter bursts out of the pen. But the Red Sox made a few offseason acquisitions designed to bolster the pen -- Anthony Varvaro, Alexi Ogando and Robbie Ross -- so nothing is being given to Workman, who has been a competent reliever in the past for Boston.