Damon Heuir scored 27 points and Jackson Stevenett added 15 points and 10 rebounds to lead Southern Utah to a 78-67 victory against Northern Arizona on Saturday night.
Jayson Cheesman had eight points and eight rebounds for the Thunderbirds (9-12, 7-5 Big Sky), who won their fourth straight.
Max Jacobsen scored 17 points and Gabe Rogers 13 for the Lumberjacks (7-14, 4-7). Stallon Saldivar added seven points and 12 rebounds.
Southern Utah never trailed after Heuir tied the score with 15:31 remaining in the first half. Northern Arizona got within 60-54 with 6:42 left, but Stevenett scored five points to push the cushion back to double digits.