Tennessee is headed for the Sweet 16 after a heart-stopping 83-77 overtime win over Iowa in Columbus, Ohio, on Sunday.
The Vols face Purdue in Louisville on Thursday.
Tennessee stormed out to a 25-point lead over the Hawkeyes and led 49-28 at the half.
However, Iowa went on 12-2 and 10-2 runs to eventually tie it in one of the biggest comebacks in tournament history.
It went down to the wire in regulation with Iowa tying it at 71-71 with 20 seconds on the clock. Tennessee held for the final shot and a Jordan Bone try rimmed out.
SEC Player of the Year Grant Williams led in the OT on offense and defense. His strip near the basket kept the Vols' OT momentum going.
Bone's two free throws late in overtime sealed the victory for the Vols, who never trailed.
Admiral Schofield was on the bench with four fouls at the end, but his three early 3-pointers helped spark Tennessee's fast start.
The Vols had 11 turnovers in the second half that allowed Iowa to get back in the game.