Belcher, who had surgery for bone spurs following the 2004 season, left the Tide's Saturday game with Auburn on May 21 with pain in his left pitching elbow.
After an original MRI it was thought that a return of bone spurs is what caused the pain, and that Belcher might be able to pitch with the pain.
After trying to toss on Wednesday, however, Belcher was sent back for another MRI when he felt a pain he did not think to be bone spurs.
The second MRI confirmed the unfortunate news that the UCL, the ligament in the elbow, was torn.
"He's going to have Tommy John's surgery," Wells said on Monday. "The doctors said bone spurs helped tear the ligament."
Belcher was 5-0 in nine starts for Alabama this season. He had a 4.37 ERA, allowing 29 earned runs in 59 and two thirds innings with one complete game.