Charles Odum scored 29 points to lead Portland State to an 80-68 victory against Idaho State on Monday night.
Chehales Tapscott added 15 points for the Vikings (9-9, 3-3 Big Sky), and Lateef McMullan and Renado Parker had 10 points each.
Kenny McGowen had 20 points and Chase Grabau 18 for the Bengals (4-14, 2-4).
Trailing 49-48 midway through the second half, Portland State went on an 11-0 run that culminated with Michael Harthun's driving layup with 8:01 remaining.
Portland State shot 46.9 percent (23 of 49) from the field, including 63.2 percent in the second half. Idaho State shot 45.6 percent (26 of 57).
Odum converted a four-point play with less and a second remaining in the first half to force a 32-all tie at intermission.