Purdue vs. Illinois Prediction, Odds & Pick
Prediction, odds and the model's read
Our model's read
Scouting report
2026 projection · last season, roster and staff
Where Purdue gets at Illinois: 60th at staying on schedule through the air, against a unit 99th at keeping opponents off schedule through the air. Where Illinois gets at Purdue: 22nd on first and second down, against a unit 132nd on early downs defensively. Illinois is also 24th at moving the ball on the ground, against a unit 126th.
How
PURattacks
ILL
- 1
Stay on schedule through the air
staying on schedule through the air · projected
PUR#60 of 138ILL#99 of 138
HowILLattacksPUR
- 1
Win first and second down
first and second down · projected
ILL#22 of 138PUR#132 of 138 - 2
Lean on the run
moving the ball on the ground · projected
ILL#24 of 138PUR#126 of 138 - 3
Stay on schedule through the air
staying on schedule through the air · projected
ILL#28 of 138PUR#121 of 138
The two teams
Purdue
Purdue is in year 2 under Barry Odom, whose offenses have been balanced. The way in is 132nd on early downs defensively, and they are 126th at shutting down the ground game.
On fourth down he goes for it less often than his peers do from the same spots (−4.0%). Against what the expected-points model recommends he is −40.6% — the profession as a whole is negative on this.
Purdue has played 2 games against an average slate, adjusted for here. That football carries about 0% of what is below; the rest is still the preseason projection.
Projected soft spots
- Defensefirst and second down#132projected
- Defensemoving the ball on the ground#126projected
- Defensestaying on schedule through the air#121projected
Illinois
Illinois is in year 6 under Bret Bielema, whose offenses have been balanced. The strengths are on both sides of the ball, led by 22nd on first and second down. The way in is 133rd at hitting chunk plays.
On fourth down he goes for it about as often as his peers do from the same spots (−0.1%). Against what the expected-points model recommends he is −27.5% — the profession as a whole is negative on this.
Illinois has played 2 games against a genuinely tough slate, adjusted for here. That football carries about 0% of what is below; the rest is still the preseason projection.
Projected strengths
- Offensefirst and second down#22projected
- Offensemoving the ball on the ground#24projected
- Defensehitting chunk plays#25projected
Projected soft spots
- Offensehitting chunk plays#133projected
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 (ILL Elo 1589, PUR Elo 1326 for reference), with home-field advantage. That projects ILL -4.9 (62% 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
PUR59th107thILLILL52nd114thPURThrough the air
PUR12th78thILLILL70th90thPUROn the ground
PUR84th117thILLILL104th77thPURStaying on the field
PUR26th103rdILLILL58th85thPURTaking care of it
PUR1st109thILLILL21st109thPUR
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 profilesThe series is level at 47–47–6 · Illinois has won 2 straight · 41% have been one-possession games
| PUR | ILL | |
|---|---|---|
| +3.0 (#59) | CORE overall | +2.2 (#63) |
| +6 / +3 | offense / defense | +10 / +8 |
| 3.78 | points / drive | 3.93 |
| 4.11 | allowed / drive | 2.94 |
| 11% | three-and-outs | 14% |
| -1 | pass over expected | +2 |
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.
Create a free account →You get Pro free for 6 months. No card required.
FAQ
Who will win Purdue vs. Illinois?
Gridpex's model favors Illinois with a 62% win probability.
What's the predicted spread for Purdue vs. Illinois?
The model projects Illinois by 4.9.
What time is Purdue vs. Illinois and what channel is it on?
Time TBD, at Memorial Stadium (Champaign, IL).
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 →