James Madison vs. San Diego State Prediction, Odds & Pick
Prediction, odds and the model's read
Our model's read
Scouting report
2026 projection · last season, roster and staff
Neither side projects a clear way in. James Madison and San Diego State rate within touching distance on every unit matchup here, closest at staying out of the backfield — on this evidence it comes down to the things a season profile cannot see.
The two teams
James Madison
James Madison is in year 1 under Billy Napier, whose offenses have been balanced. The strengths are defensive, led by 8th on early downs defensively. The way in is 136th at keeping everything in front of them.
On fourth down he goes for it about as often as his peers do from the same spots (+2.5%). Against what the expected-points model recommends he is −21.1% — the profession as a whole is negative on this.
James Madison has played 1 game against an average slate, adjusted for here. That football carries about 0% of what is below; the rest is still the preseason projection.
Projected strengths
- Defensefirst and second down#8projected
- Defensethe push the line gets#10projected
- Defensestaying on schedule through the air#12projected
Projected soft spots
- Defensehitting chunk plays#136projected
San Diego State
San Diego State runs it: Sean Lewis's offenses have been run-leaning across 6 seasons. The strengths are on both sides of the ball, led by 10th at staying out of the backfield. The way in is 113th at hitting chunk plays.
On fourth down he goes for it about as often as his peers do from the same spots (−0.0%). Against what the expected-points model recommends he is −28.5% — the profession as a whole is negative on this.
San Diego State has played 1 game against an average slate, adjusted for here. That football carries about 0% of what is below; the rest is still the preseason projection.
Projected strengths
- Offensegetting stopped at the line#10projected
- Defensestaying on schedule through the air#11projected
- Defenseturning trips inside the 40 into points#11projected
Projected soft spots
- Offensehitting chunk plays#113projected
Ranks are national. Nothing here is last season's number — carrying one forward is measurably worse than saying nothing — and in-season figures are adjusted for who was actually played. This describes the matchup; it is not a prediction and not a pick.
Head coaches only — there is no free feed for coordinators, so on a program where the head coach does not call the offense this describes the staff he hired. Play-calling identity is a style, not a grade: throwing more than the situations warrant is not better than throwing less than they warrant.
Model prediction
how the number is builtOur model simulates the game drive by drive from each side's opponent-adjusted efficiency (SDSU Elo 1469, JMU Elo 1776 for reference), with home-field advantage. That projects SDSU -12.8 (79% to win), essentially in line with the market.
Why that percentage is worth reading: across 604 graded in-season games, the calls this model put near 58% came in at 58.2%. The full calibration table is published, bin by bin. Early in the season the cold-start path runs instead and calibrates less well (Brier 0.2028 against 0.1889).
Model as of Sep 1 · through week 1 · drive simulation
Where the game is won
2026 national rank · right is better
offensethe defense it faces
Moving the ball
JMU12th65thSDSUSDSU123rd27thJMUThrough the air
JMU88th84thSDSUSDSU133rd48thJMUOn the ground
JMU25th105thSDSUSDSU50th39thJMUStaying on the field
JMU34th75thSDSUSDSU104th77thJMUTaking care of it
JMU21st22ndSDSUSDSU104th76thJMU
Each bar runs from last in the country on the left to 1st on the right. The filled span is the gap between the offense and the defense it faces.
Season form — 2026
nationally rankedThe matchup, in context
series history + adjusted profiles| JMU | SDSU | |
|---|---|---|
| +7.6 (#41) | CORE overall | +3.8 (#56) |
| -1 / -8 | offense / defense | -7 / -10 |
| 2.50 | points / drive | 0.91 |
| 1.44 | allowed / drive | 2.80 |
| 38% | three-and-outs | 36% |
| -7 | pass over expected | -23 |
Bold is the side ahead. CORE strips the situation from every play and solves the schedule out across the league, so these compare two teams that never met.
Key matchups
The analyst read: each team's offense splits crossed against the opponent's defense, with the edges called out.
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FAQ
Who will win James Madison vs. San Diego State?
Gridpex's model favors San Diego State with a 79% win probability.
What's the predicted spread for James Madison vs. San Diego State?
The model projects San Diego State by 12.8.
What time is James Madison vs. San Diego State and what channel is it on?
Sat, Sep 19, 10:00 PM ET, at Snapdragon Stadium.
Where this number comes from. Every projection on this page is produced by the same model, run before kickoff on opponent-adjusted efficiency, power ratings and situational data — walk-forward validated on eleven seasons and never adjusted after the fact. How the model works →