Elbert was diagnosed with a complete tear of the ulnar collateral ligament in his throwing elbow by team physician Dr. Neal ElAttrache. The expected time of recovery is 12-16 months.
This will be the third surgery Elbert has had on the elbow in the last year. He had operations to repair damaged cartilage in January and September 2012.
In May, Elbert was cleared to pitch in minor-league games, and he went 2-0 with a 2.45 ERA in eight rehab games this season between Single-A Rancho Cucamonga and Double-A Chattanooga.
It wasn’t until Elbert pitched on back-to-back nights for the first time, on May 25 and 26 with Double-A Chattanooga, that he felt a recurrence of pain in the elbow.
Elbert went 1-1 with a 2.20 ERA in 43 appearances last year.