Bobby Jenks underwent minor back surgery at Mass General today.
The former White Sox closer, who had an injury-filled season with the Red Sox last season, is expected to be ready for spring training to compete for at least a set-up job. Jenks signed a two-year, $12 million deal last offseason.
The Red Sox bullpen is a still a work in process. After losing Jonathan Papelbon to free-agency, the team may allow Daniel Bard to become a starter. The Red Sox have been discussing a deal with Oakland for closer Andrew Bailey.
At the moment, free-agent Ryan Madson appears too expensive.