We've seen various reports throughout the offseason that the Cubs are interested in signing a right-handed set-up man.  Carrie Muskat talks about that again.

The Cubs are still looking for late-inning relief help, preferably right-handed. That said, they could open camp without adding anyone else and possibly make a deal during Spring Training. There were rumors the team was interested in free agent Kiko Calero, 35, but he missed time in 2008 because of a torn rotator cuff and was sidelined last season because of inflammation in his shoulder. Calero is looking for a two-year contract, and the Cubs are probably hesitant to do something like that considering his injuries. They do have in-house candidates to consider such as Angel Guzman, Michael Parisi, Justin Berg and Esmailin Caridad.

Harry Pavlidis covered Kiko Calero last month on Cubs F/X.  Calero's success is in part his ability to keep lefties from pulling the ball.  Between Heilman (who he'd replace) and Marmol, Calero is better than either by quite a bit at not allowing lefties to pull the ball.

Harry also covered the potential rookie bullpen candidates in this post.  Of that group, Jeff Gray's 95 mph 2-seam fastball stands out.  Atkins and Caridad throw the most pitches in the wide strikezone with John Gaub finishing last.  Harry thinks Caridad is ready to step up.