DENVER (AP) _ Kent McCausland hit five second-half 3-pointers and Iowa adapted its half-court game to match high-paced Arkansas, outlasting the Razorbacks 82-72 Saturday in the second round of the NCAA tournament.

McCausland finished with 17 points and Dean Oliver, harassed all day by Arkansas' pressure defense, added 17 for the Hawkeyes, who overcame a 13-point deficit to advance to the round of 16 for the third time under outgoing coach Tom Davis.

Chris Walker scored 22 points and Kareem Reid had 18 points and 11 assists for Arkansas (23-11), which blew leads of 47-34 and 66-59. The Razorbacks were outscored 23-6 over the final 7:20.

McCausland, who was 0-for-2 from 3-point range in the first half, hit back-to-back 3-pointers to trigger a 12-0 run that put Iowa ahead 71-66 with 4:35 remaining.

Oliver capped the run with a length-of-the-court behind-the-back pass that led to a dunk by Jess Settles.

Arkansas, the fourth seed in the West, pulled to 73-72 on Reid's 3-pointer with 2:26 left, but J.R. Koch tipped in a missed shot for Iowa, and the Razorbacks misfired on their final three possessions, setting off an emotional celebration for Davis and the fifth-seeded Hawkeyes (20-9).

Iowa, which overcame 24 turnovers, will play top-seeded Connecticut (30-2) in the West Regional semifinal in Phoenix.

The Razorbacks were denied their seventh trip to the final 16 this decade, committing 23 turnovers against a surprisingly effective Iowa press that helped lead a 16-0 charge that brought the Hawkeyes back.