Washington State vs. Mercer Dunkel Predictions & Vegas Odds - Dec. 20

The Washington State Cougars (4-8) host the Mercer Bears (7-4) at Beasley Coliseum, tipping off at 5 p.m. ET on Saturday, December 20, 2025. The Cougars are 8.5-point favorites in the game. The matchup's point total is set at 153.5.

Washington State is coming off of a 78-63 victory over Eastern Washington in its most recent game on Wednesday. In Washington State's win, Emmanuel Ugbo led the way with a team-high 20 points (adding four rebounds and zero assists). Mercer's most recent contest was an 81-63 loss to UCF on Wednesday. Brady Shoulders scored a team-best 14 points for Mercer in the loss.

Washington State vs. Mercer Odds and Game Time

• When: Saturday, December 20, 2025 at 5 p.m. ET
• Where: Beasley Coliseum in Pullman, Washington
• Spread favorite: Washington State -8.5
• Moneyline favorite: Washington State -352
• Moneyline underdog: Mercer +277
• Over/Under: 153.5 points

How to watch Washington State vs. Mercer

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

Betting the Over/Under: Washington State vs. Mercer

• Washington State and its opponents have combined to exceed Saturday's over/under of 153.5 points five times this season.
• This season, four of Mercer's games have ended with a combined score higher than 153.5 points.
• Together, the two teams combine for 156.2 points per game, 2.7 points more than the total of 153.5 for this matchup.
• This game's total is 1.5 fewer points than the 152 these two teams combine to allow per game in 2024.
• Washington State has seen a 152.8 average over/under in its games this season, 0.7 less than the over/under in this matchup.
• Mercer's games have an average over/under of 155.5 points this season, 2.0 more points than the over/under for this contest.

Betting the Spread: Washington State vs. Mercer

• In Washington State's 12 games this season, it has five wins against the spread.
• The Cougars have covered the spread once this season when favored by 8.5 points or more (in two chances).
• Mercer has played nine games, with seven wins against the spread.
• The Bears have covered the spread twice this season when underdogs by 8.5 points or more (in three chances).
• Washington State has two wins against the spread, and is 2-3 overall, at home this season.
• At home, Washington State is unbeaten ATS (1-0) as a 8.5-point favorite or more.
• Mercer is 2-4 overall, and 4-2 against the spread, in away games.

Betting the Moneyline: Washington State vs. Mercer

• Washington State has won three of the four games it has played as the moneyline favorite this season.
• The Cougars have played as a favorite of -352 or more once this season and won that game.
• Oddsmakers have implied with the moneyline set for this matchup that Washington State has a 77.9% chance to win.
• Mercer has won in two of the six contests it has been named as the moneyline underdog this year.
• The Bears have won all of their three games in which they were named as at least a +277 moneyline underdog.
• Mercer has an implied victory probability of 26.5% according to the moneyline set by sportsbooks for this matchup.