Detroit Tigers pitcher Joe Nathan has a torn right UCL in his right elbow and is expected to undergo surgery.
The Tigers announced earlier Thursday that they recalled the injury rehabilitation assignment of Nathan and that he would remain on the disabled list.
In a corresponding move, the Tigers recalled the contract of right-hander Alex Wilson from Triple-A Toledo.
Nathan is likely headed for Tommy John surgery after leaving his Triple-A relief appearance on Wednesday following just ten pitches. He was scheduled to throw 25 pitches.
Detroit placed Nathan on the 15-day disabled list earlier this season with a right elbow flexor strain. He only pitched in one game this season, earning a save for the Tigers before being placed on the DL.
He has a career record of 62-34 and is MLB's active leader in saves with 377.
- Scooby Axson