Idaho vs. Cal Poly Dunkel Predictions & Vegas Odds - Dec. 21

The Idaho Vandals (7-4) visit the Cal Poly Mustangs (5-8) at Robert A. Mott Athletics Center, tipping off at 7 p.m. ET on Sunday, December 21, 2025. The Mustangs are 1.5-point underdogs in the game. The matchup has an over/under of 167.5 points.

Idaho took care of business in its most recent matchup 109-55 against Evergreen State on Sunday. In the victory, Jackson Rasmussen led Idaho with 20 points. Cal Poly enters this contest following a 108-87 loss to UCLA on Friday. Cayden Ward totaled 21 points, seven rebounds and two assists for Cal Poly.

Idaho vs. Cal Poly Odds and Game Time

• When: Sunday, December 21, 2025 at 7 p.m. ET
• Where: Robert A. Mott Athletics Center in San Luis Obispo, California
• Spread favorite: Idaho -1.5
• Moneyline favorite: Idaho -135
• Moneyline underdog: Cal Poly +113
• Over/Under: 167.5 points

How to watch Idaho vs. Cal Poly

• TV Channel: ESPN+
• Check out the rest of our Dunkel Index NCAA Basketball Picks!

Betting the Over/Under: Idaho vs. Cal Poly

• None of Idaho's games this season have ended up with a higher combined score than Sunday's over/under of 167.5 points.
• Seven of Cal Poly's games have ended with a combined score over 167.5 points this season.
• The Vandals average 82.6 points per game and the Mustangs score 82.9, amounting to 2.0 points under the matchup's over/under of 167.5.
• The 158.9 points per game these two teams surrender to opponents combined this season are 8.6 less than the 167.5-point over/under in this contest.
• On average, the over/under in Idaho's games is 13.7 fewer points than the over/under of 167.5 in this matchup.
• The over/under for this matchup is 3.1 points lower than the average over/under in Cal Poly's games this season of 170.6.

Betting the Spread: Idaho vs. Cal Poly

• In Idaho's eight games this year, it has four wins against the spread.
• The Vandals have covered the spread twice this season when favored by 1.5 points or more (in four chances).
• Cal Poly has played 11 games, with five wins against the spread.
• The Mustangs are 5-4 ATS when underdogs by 1.5 points or more this season.
• At home, as a 1.5-point underdog or greater, Cal Poly is winless ATS (0-1).
• Away from home, Idaho has two wins against the spread and are 2-3 overall.
• Idaho is winless ATS (0-1) away from home as 1.5-point favorites or more.

Betting the Moneyline: Idaho vs. Cal Poly

• Idaho has been the moneyline favorite in four games this season and won two (50%) of those contests.
• The Vandals have played as a favorite of -135 or more once this season and won that game.
• The moneyline for this contest implies a 57.4% chance of a victory for Idaho.
• Cal Poly has been chosen as moneyline underdogs in nine games this year and has walked away with the win three times (33.3%) in those games.
• The Mustangs have a mark of 2-5 in contests where bookmakers give them odds of +113 or worse on the moneyline.
• Cal Poly has an implied victory probability of 46.9% according to the moneyline set for this matchup.

Dunkel Index Prediction for Idaho vs. Cal Poly

• Pick ATS: Idaho (- 1.5)
• Pick OU: Under (167.5)
  
• Prediction: Idaho 84 - Cal Poly 78