Cherry also had seven rebounds and six assists. Keron DeShields chipped in 13 points off the bench for the Grizzlies (15-4, 11-0), who maintained their two-game conference lead over second-place Weber State.
Aaron Moore had 14 points for the Vikings (5-13, 3-8), who lost their fifth straight. Portland State, playing its first home game in 19 days, outrebounded Montana 32-23 but committed 12 turnovers that the Grizzlies turned into 17 points.
Portland State led for much of the first half, but Montana closed on a 10-2 run to lead 39-31 at halftime. The Grizzlies never looked back, increasing their lead to as many as 17 points in the second half.
Montana shot 56 percent from the floor, including 67 percent after halftime.
The guard prospect was one of the top players at the annual Spiece Run N Slam event.
SMU has signed a second player from Australia, 6-foot-11 forward Harry Froling, to a national letter of intent. The Mustangs previously signed guard Tom Wilson from Australia.
There's nothing to suggest the Jayhawks won't end up atop the Big 12 for a 13th season in a row. But what about a return to the Final Four?