Kareem Jamar added 11 points for the Grizzlies (15-6, 8-1 Big Sky), who moved into a tie with Weber State for first place in the conference standings.
Montana led most of the first half but fell behind 32-30 with 2 minutes to play before halftime. The Grizzlies then rattled off 13 straight points, including the first eight of the second half, and led 43-32 after a Ward lay-in with 17:48 left to play.
The Vikings fought back thanks to eight straight points from Odum during a 10-1 run, and cut the lead to 65-63 with 34 seconds remaining. But the Grizzlies hit 4 of 6 free throws down the stretch to secure their 10th win in the last 11 games.
Indiana guard James Blackmon Jr., who averaged 15.8 points in 13 games before being injured last season, has withdrawn from the NBA draft.
Isaiah Briscoe has decided to withdraw from the NBA draft and will return to Kentucky for his sophomore season. Marcus Lee intends to transfer.
The Big 12/SEC Challenge will again feature Kansas and Kentucky, this time at Rupp Arena. That's not the only exciting matchup in next season's midseason conference showdown.