Jhonny Peralta underwent surgery to repair a torn ligament in his left thumb Thursday morning and will be out until midseason, according to the St. Louis Cardinals.

Peralta got a second opinion on Wednesday and Dr. Charles Goldfarb confirmed the opinion of team physicians and recommended surgery.

John Mozeliak said general managers of other teams have already begun calling him since word of Peralta's injury broke early this week, but he hasn't placed a single call on available shortstops.