Mitchell has been ruled out for Wednesday's game against the Trail Blazers due to a left ankle sprain.
Mitchell won't play in the second leg of the Thunder's back-to-back set after apparently injuring his ankle Tuesday. He finished with 14 points (6-10 FG, 0-1 3Pt, 2-2 FT), three rebounds, three assists and one steal across 28 minutes during a 123-103 loss to Portland. In his absence, Alex Caruso, Bennett Stirtz and Nique Clifford are candidates for increased roles.