Pitcher Chris Carpenter has shifted into the bullpen of the Cardinals as he approaches his return to the mound, according to St. Louis Post-Dispatch. Carpenter could be activated Monday in Arizona and is available to throw Tuesday in his new role with the team. "We all felt that I'd get more of an opportunity to get out there more times doing it this way than trying to build my pitch count back up as a starter and only get one or two starts," Carpenter said. "So, I'm looking forward to it. It's going to be new. I haven't (relieved) in a long time." Carpenter is returning from a slightly torn shoulder muscle that forced him from his third start back from elbow surgery.