Manny Ramirez of the Red Sox leans back to avoid a pitch from the Diamondbacks’ Dan Haren during last night’s game at Fenway Park.

The Providence Journal / Mary Murphy

BOSTON — Pitcher Curt Schilling underwent surgery to repair his damaged biceps tendon and right shoulder yesterday in Wilmington, Del. The procedure was performed by his physician, Dr. Craig Morgan.

“Everything went well,” said Morgan.

The doctor also said Schilling was experiencing some pain after the surgery, and because of the late hour in which it was completed, Schilling remained in the hospital overnight and will return to Boston today.

Morgan said Schilling had a disease in his biceps tendon, which was the primary diagnosis back in January when Morgan first examined the pitcher. Schilling also had a tear in his labrum similar to the one he had in 1995. He also had a “tiny, tiny” tear in his rotator cuff, which Morgan repaired with a small stitch.

“The rest of the stuff in his shoulder was healthy,” Morgan said. “His prognosis to have all those things heal is good. Now, whether he wants to go through the rehab to be able to pitch at the major-league level at age 41 remains to be seen, and it’s his decision.”

Morgan said the rehab process would be daily four-hour exercises for the next six months if Schilling wants to have a chance to pitch in the big leagues again. If he can mentally put himself through it, Morgan said there’s a good chance Schilling could pitch again.

Manager Terry Francona called Schilling yesterday to wish him good luck.

Schilling suffered the injury during the offseason, after he had signed a one-year, $8-million contract with the Red Sox, which included incentives. The club cannot pinpoint exactly when the injury occurred, but Schilling began to feel the pain when he started to throw in January to prepare for spring training.

Schilling was examined by Morgan then, and the doctor recommended that Schilling have surgery. The Red Sox wanted to take the conservative approach of strengthening the biceps and shoulder.

“The best treatment was for him to have surgery,” said Morgan. “The rehab would be about six months.”

jmcdonal@projo.com