WELLS, Maine (AP)   A mixed martial artist is recovering in the wake of suffering an injury to a particularly sensitive part of his anatomy.

Ultimate Fighting Championship fighter Devin Powell of South Berwick, Maine, suffered a ruptured testicle while sparring with a partner on Tuesday. The injury happened when fellow UFC fighter Joe Lauzon hit him with a knee during training.

Powell posted a thank you to “the fine ambulatory services” in Wells, Maine, for getting him to the hospital for surgery, which he says was a success. He says the surgery involved getting “the blood clot drained and the goods repaired.”

Powell says he was not wearing a protective cup while training. Lauzon posted on Reddit that he’s sorry for the accident, which happened while they were in the middle of grappling.