Mitchell (undisclosed) exited to the locker room in the third quarter of Friday's Game 3 of the Western Conference Finals versus San Antonio, Clemente Almanza of USA Today reports.
Mitchell started for Jalen Williams (hamstring), who was ruled out ahead of tipoff. However, Mitchell suffered an undisclosed injury in the third quarter after logging only 17 minutes. If he's unable to return, Jared McCain and Cason Wallace are candidates to see extra minutes the rest of the way.