Dunigan was nearly unstoppable inside, shooting 10-of-14 from the field to give Oregon (8-4) its fourth straight win with the start of Pac-10 play looming.

Malcolm Armstead had 14 points and eight assists, and senior Tajuan Porter, who missed most of the Ducks last six games with an ankle injury, added 15 points on 5-of-7 shooting from 3-point range.

Pine Bluff (0-11) got as close as 32-31 early in the second half but Oregon blew the game open with a 12-0 run midway through the period.

Terrance Calvin led Pine Bluff with 16 points