EUGENE — Michael Dunigan had 26 points and five rebounds Monday night as Oregon overcame a sluggish start to defeat winless Arkansas-Pine Bluff 73-53 at McArthur Court.

EUGENE — Michael Dunigan had 26 points and five rebounds Monday night as Oregon overcame a sluggish start to defeat winless Arkansas-Pine Bluff 73-53 at McArthur Court.

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 Duck's last six games with an ankle injury, added 15 points on 5-of-7 shooting from 3-point range.

Former South Medford standout E.J. Singler added nine points and seven rebounds in 25 minutes for Oregon.

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.

Armstead sparked the run with back-to-back alley-oops — the first an acrobatic finish by Singler on a pass from halfcourt, the second a thunderous dunk by Dunigan — that gave Oregon a 59-40 lead with 7:17 remaining.

Garrett Sim, a 6-foot-1 guard from Portland, scored just two points for the Ducks but got the loudest cheers of the night when he drove baseline and threw down a one-handed jam over two Pine Bluff defenders with less than three minutes to play.

Armstead followed with two free throws to give Oregon its largest lead of the game at 71-47.

Terrance Calvin led Pine Bluff with 16 points.