Manager John Farrell said Masterson (shoulder) is "ready to come back," the Boston Globe reports. "We've got a decision to be made here in the coming days," the manager said. "Depends on what role we put him in." Masterson made four rehab starts, the last of which proved he doesn't need any more starts in the minors. The decision's been made to bring him back to Boston; the only thing left to decide is whether he's a starter or reliever. We suspect he'll pitch out of the pen.