Guerra (forearm) will undergo surgery that will force him to begin the season on the injured list, Martin Gallegos of MLB.com reports.

EDGE Analysis

Guerra recently received a second opinion on his forearm tightness, and he'll be forced to miss time due to his procedure. While a timetable for Guerra's return hasn't yet been revealed, Domingo Acevedo, Sam Moll and A.J. Puk are candidates to take on setup duties to begin the regular season.