Milliken nailed a 3-pointer, drove the baseline for a layup and hit another trey to give Creighton an 85-80 lead with 1:09 remaining in the second overtime. Austin Chatman, who was scoreless in the first half but finished with 24 points, made five free throws to seal the win for Creighton (8-2).
South Dakota was trailing 65-62 with three seconds left in regulation when Tyler Larson made a 3 to force overtime.
Chatman made a 3 to start the first overtime. South Dakota's Trey Norris nailed a 3-pointer to tie at 76 and go into the second overtime.