We already knew that Joel Hanrahan was having season-ending surgery to repair the flexor tendon in his right forearm, but doctors didn’t rule out the possibility that he would also require Tommy John surgery. Well, the worst-case scenario played out today.

Hanrahan’s agent, Mike Dillon, confirmed that his client had Tommy John surgery to repair the ulnar collateral ligament in his elbow. He also had a bone spur removed. It usually takes pitchers at least one year to make it back from Tommy John surgery, so he figures to miss the early part of the 2014 season.

The Red Sox acquired Hanrahan from the Pirates during the offseason to serve as their closer, but he only made nine appearances with the club. The 31-year-old is due to become a free agent this winter and will likely have to settle for an incentive-laden contract.