Lefty Dontrelle Willis, who signed a minor league deal with the Orioles late in the spring, left a game for Triple-A Norfolk on Wednesday afternoon after throwing his ninth pitch in relief.

Willis told the Virginian-Pilot that he had been dealing with pain since spring training and felt a knot in his forearm from the beginning of his outing Wednesday.

“I tweaked my forearm,” Willis told the newspaper. “I’ve worked hard. Maybe it’s overuse."

Given the fact he is trying to become a reliever and make a new team, Willis called the setback “frustrating, especially in the new position I’m in.”

Willis was examined by the club’s trainer, and the injury does not seem to be too serious.

“Based on the location [where] he says he feels it, it doesn’t sound like too big a deal,” Tides manager Ron Johnson told the paper.