Karinchak (shoulder) began a rehab assignment at Triple-A Columbus on Sept. 6 and has struck out seven batters over 4.2 innings across five appearances while giving up two earned runs on two hits and five walks.
Karinchak has been on the injured list all season after reporting shoulder fatigue in spring training and being slow to recover from the issue and return to form. While working out at the Guardians' facility in Arizona in August, Karinchak seemed to turn a corner with his rehab program and was given the green light to report to Triple-A earlier this month. His results have been uneven thus far, but manager Stephen Vogt hasn't dismissed the possibility of Karinchak being an option out of the big-league bullpen before the regular season ends Sept. 29, per MLB.com.