Athletics left-hander Drew Pomeranz is slated for arthroscopic surgery on the AC joint in his left shoulder, John Hick of the Bay Area News Group reports.

After making his last appearance of the season on Sept. 26, Pomeranz soon returned to Oakland in order to have an MRI on his shoulder, which revealed damage to the AC joint. While the extent of the ailment isn't known and surgery hasn't been scheduled, an arthroscopic procedure signals a shorter recovery timeline. As a result, the left-handed reliever should be available by the time camp rolls around next March.