The Gonzaga Bulldogs take on the San Diego Toreros in San Diego, CA. Tip-off is set for 9:30 p.m. ET on ESPN+.
Gonzaga is favored by -28.5 points on the spread, and the total is set at 162.5 points.
Here’s my Gonzaga vs. San Diego predictions and college basketball picks for December 30, 2025.
Gonzaga vs San Diego Prediction
My Pick: Gonzaga -28.5 or Better
My Gonzaga vs San Diego best bet is on the Bulldogs to cover the spread. For all of your college basketball bets, be sure to find the best lines by using our live NCAAB odds page.
Gonzaga vs. San Diego Odds
| Gonzaga Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-28.5 -102 | 162.5 -110 / -110 | OFF |
| San Diego Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+28.5 -120 | 162.5 -110 / -110 | OFF |
- Gonzaga vs San Diego spread: Gonzaga -28.5
- Gonzaga vs San Diego over/under: 162.5 points
Gonzaga vs San Diego College Basketball Betting Preview
Welcome back, college basketball fans, to everyone's favorite late night treat: Will Gonzaga mow down a WCC opponent and cover a monstrous spread. Since 2010, Gonzaga is 149-126-8 in the WCC, with an average margin of victory over 17 points.
Some of the conference has ridden Gonzaga's prominence to stronger performance. That doesn't include San Diego, which is wildly outmatched here.
Gonzaga Basketball
Conventional wisdom entering this season had Gonzaga outside the elite teams in college basketball but still well worth of a tournament berth.
Then former WAC Player of the Year Tyon Grant-Foster — who turns 26 in March — was granted eligibility and the Zags' outlook looked rosier. Once they stepped on the floor, that was clear.
The Zags have played a top 30 schedule and have lost just once. That loss came in Gonzaga's third game in three days, against an elite Michigan team, with the Zags shooting 14% from deep while the Wolverines hit 48% from downtown.
Aside from that outlier, this has looked like a national championship contender.
Mark Few built a roster on productivity and experience. It's the third-most experienced roster in college hoops, with eight of Few's nine rotation players aged 21 or older. Five of those players will be 23 or older by March, each of those five in at least their fourth season of college hoops.
Three Zags earned Player of the Year honors in a conference elsewhere in their career, with two more earning All-Conference honors. Those nine players have 25 NCAA Tournament games under their belt.
The resulting outcome is a team that plays fast, smart and consistently. Few has always preferred a quick tempo and this team is built to run. The Zags are scoring 1.29 points per possession in transition, among the nation's best per Hoop-Explorer.
San Diego Basketball
Since Steve Lavin returned to the sidelines after nearly a decade as a broadcaster, he's been unable to pull San Diego out of mediocrity and into the class of WCC teams that make Few and the Zags sweat.
In Lavin's three-plus years with the Toreros, San Diego is 0-4 against the Zags with an average margin of defeat north of 26 points per game.
You'd expect more of the same this season. San Diego is a team that doesn't add up in many ways. The best thing the Toreros do is force turnovers, yet San Diego doesn't play fast offensively and doesn't convert in transition. Also, the Toreros shoot a ton of 3s, but don't shoot them well.
It makes for a team that's clunky and inconsistent, capable of beating a solid UC San Diego team on the road or leading USC after 10 minutes, but also able to get blown out by a bad UC Riverside squad.
The best player for Lavin is Ty-Laur Johnson, a transfer from Louisville then Wake Forest looking for a starring role. He's found it here, but there's not much else to love from the Toreros, who should struggle to reach .500 in WCC action.
Gonzaga vs. San Diego Betting Analysis
To pick against the Zags in a spot like this, there would need to be some indication their opponent had a leg up somewhere on paper.
On the floor, Gonzaga is bigger, faster, stronger and smarter than San Diego at every position and the stats on the page don't suggest any cracks for the Toreros to exploit.
San Diego feeds off forcing turnovers, which Gonzaga never does. San Diego hoists tons of 3s, but Gonzaga runs teams off the line at an elite level.
There's a big number here and there's no reasons to fear laying it.
My Pick: Gonzaga -28.5 or Better
