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Purdue Boilermakers
1-0 · #122 Elo
at
Sat, Oct 3, 12:00 AM ET
Gies Memorial Stadium
Illinois Fighting Illini
1-0 · #26 Elo
Spread —Total —Moneyline —
The read
On rating alone Illinois Fighting Illini are 13.8 points better (#26 vs #122 of 240), and ILL add 0.0 for home field. The clearest mismatch is the passing game: ILL passing ranks #21, PUR defends it at #123; the other way PUR #116 into ILL's #101.
Who has the edge
Rating
Clear edge
ILL
ILL rated 13.8 points better on Elo (#26 vs #122).
Home & rest
Even
—
ILL gets 0.0 points for home field.
Passing game
Clear edge
ILL
ILL passing ranks #21, PUR defends it at #123; the other way PUR #116 into ILL's #101.
context · not in the margin
Rushing game
Slight edge
ILL
ILL rushing ranks #86, PUR defends it at #112; the other way PUR #53 into ILL's #50.
context · not in the margin
Third down & red zone
Slight edge
ILL
ILL third-down conversion ranks #43, PUR defends it at #113; the other way PUR #86 into ILL's #122.
context · not in the margin
Form (last 5)
Slight edge
PUR
ILL +19.0 per game over the last five, PUR +25.0.
context · not in the margin
Market
not priced
—
No line yet.
context · not in the margin
The margin, factor by factor
Purdue BoilermakersIllinois Fighting Illini
1442 Elo · #122
RatingThe Elo gap in points — the model's core read on who is better, before the situational pieces below.
ILL +13.8 pts
1691 Elo · #26
road
Home field
not priced
home
—
Rest
even
—
−7.4 pts vs ILL D
Offense vs defenseEach offense's scoring rating against the other defense's — what drives the model total. Shown as an edge, though the winner call runs on Elo.
ILL +11.5 pts
+4.1 pts vs PUR D
W · +25.0
Form (last 5)Average margin over the last five games. Already inside the ratings — listed so you can see when recent form and the rating disagree.
PUR +3.0 pts
W · +19.0
−6.1
SP+ (last season)Bill Connelly's SP+ from last season, the prior the college model starts each season from.
ILL +19.0 pts
+12.9
—
MarketThe consensus spread, read as points. Compare with the model margin above it.
not priced
—
Bars are in points toward the favored side. Blue factors are inside the model's margin; grey ones are context it does not add on top (form and offense/defense are already in the ratings; injuries beyond the quarterback are not priced).
Dissect the matchup
CollegeFootballData, garbage time excluded · 2025 season (last season until three games are in)Biggest mismatches
- ▸PUR interception rate (#9) against a ILL defense ranked #124 at stopping it
- ▸PUR defense (#17 rush explosiveness allowed) against a ILL offense ranked #131
- ▸ILL turnovers / game (#11) against a PUR defense ranked #125 at stopping it
- ▸ILL pass success rate (#14) against a PUR defense ranked #127 at stopping it
- ▸ILL defense (#5 pass explosiveness allowed) against a PUR offense ranked #117
A mismatch is a rank gap of at least a fifth of the league between an offense and the defense it faces on the same measure. Descriptive rows (pass rate, pace, direction) are shown for reading the game, not ranked. ▲▼ mark where the last three games sit clearly above or below the season number, in the direction that helps that side.
Purdue Boilermakers offense vs Illinois Fighting Illini defense
ranks of 135| PUR off | ILL def | Edge | |
|---|---|---|---|
| Identity | |||
| Pass rate / Pass rate faced | 52% | 54% | · |
| Standard-down shareShare of plays on standard downs (staying ahead of the chains). | 68% | 72% | · |
| Plays / game | 56 | 59 | · |
| Possession / game | 28:02 | 29:05 | · |
| Passing | |||
| Passing PPA / playPredicted points added per pass play (CFBD). | +0.14#116 | +0.32#101 | · |
| Pass success rate | 43%#53 | 49%#132 | PUR |
| Pass explosivenessPPA on successful pass plays — how big the wins are. | 1.42#117 | 1.35#5 | ILL |
| Yards / pass attempt | 6.5#108 | 6.6#45 | ILL |
| Completion % | 59%#102 | 64%#93 | · |
| Interception rate / Interceptions forced | 1.0%#9 | 1.4%#124 | PUR |
| Rushing | |||
| Rushing PPA / play | +0.15#53 | +0.07#50 | · |
| Rush success rate | 43%#70 | 41%#53 | · |
| Rush explosiveness | 1.04#41 | 0.92#50 | · |
| Line yards / rushYards credited to the offensive line (first 4 yards weighted). Defense column: allowed. | 2.94#66 | 2.88#68 | · |
| Stuff rate / Stuff rate forcedRushes stopped at or behind the line. | 19%#76 | 19%#70 | · |
| Power successConversion rate on 3rd/4th and ≤2, or goal-to-go from the 2. | 56%#135 | 75%#97 | ILL |
| Yards / rush | 4.0#93 | 4.0#51 | ILL |
| Situational | |||
| Standard-down PPA | −0.00#119 | +0.12#87 | ILL |
| Passing-down PPAObvious passing situations (2nd & 8+, 3rd/4th & 5+). | +0.36#50 | +0.39#112 | PUR |
| Third-down conversion | 38%#86 | 45%#122 | PUR |
| Points / scoring opportunityPoints per drive that reaches the opponent's 40. | 3.06#119 | 4.33#124 | · |
| Havoc rate faced / Havoc rateTFLs, forced fumbles, interceptions and passes defensed per play. | 16.0%#83 | 15.3%#76 | · |
| Turnovers / game / Takeaways / game | 1.75#119 | 1.23#76 | ILL |
Illinois Fighting Illini offense vs Purdue Boilermakers defense
ranks of 135| ILL off | PUR def | Edge | |
|---|---|---|---|
| Identity | |||
| Pass rate / Pass rate faced | 48% | 43% | · |
| Standard-down shareShare of plays on standard downs (staying ahead of the chains). | 71% | 72% | · |
| Plays / game | 58 | 57 | · |
| Possession / game | 30:55 | 31:58 | · |
| Passing | |||
| Passing PPA / playPredicted points added per pass play (CFBD). | +0.41#21 | +0.40#123 | ILL |
| Pass success rate | 48%#14 | 48%#127 | ILL |
| Pass explosivenessPPA on successful pass plays — how big the wins are. | 1.57#55 | 1.62#101 | ILL |
| Yards / pass attempt | 8.2#26 | 9.3#133 | ILL |
| Completion % | 67%#17 | 65%#109 | ILL |
| Interception rate / Interceptions forced | 1.6%#27 | 4.2%#8 | · |
| Rushing | |||
| Rushing PPA / play | +0.08#86 | +0.18#112 | · |
| Rush success rate | 48%#15 | 49%#127 | ILL |
| Rush explosiveness | 0.80#131 | 0.86#17 | PUR |
| Line yards / rushYards credited to the offensive line (first 4 yards weighted). Defense column: allowed. | 3.04#52 | 3.25#121 | ILL |
| Stuff rate / Stuff rate forcedRushes stopped at or behind the line. | 19%#80 | 18%#78 | · |
| Power successConversion rate on 3rd/4th and ≤2, or goal-to-go from the 2. | 73%#57 | 78%#112 | ILL |
| Yards / rush | 3.9#98 | 4.8#109 | · |
| Situational | |||
| Standard-down PPA | +0.14#52 | +0.27#132 | ILL |
| Passing-down PPAObvious passing situations (2nd & 8+, 3rd/4th & 5+). | +0.37#43 | +0.26#58 | · |
| Third-down conversion | 42%#43 | 43%#113 | ILL |
| Points / scoring opportunityPoints per drive that reaches the opponent's 40. | 4.21#29 | 4.03#106 | ILL |
| Havoc rate faced / Havoc rateTFLs, forced fumbles, interceptions and passes defensed per play. | 15.5%#70 | 15.2%#77 | · |
| Turnovers / game / Takeaways / game | 0.85#11 | 0.75#125 | ILL |
Season
| PUR | ILL | |
|---|---|---|
| 1-0 | Record | 1-0 |
| 44.0 | Points for / game | 42.0 |
| 19.0 | Points against / game | 23.0 |
| 1-0 / 0-0 | Home / road | 1-0 / 0-0 |
| 0-1 | Against the spread | 0-1 |
| 1-0 | Over / underOvers–unders in this team's games. A tendency, not a lean. | 1-0 |
| W | Last 5 | W |
Power ratings
| PUR | ILL | |
|---|---|---|
| 1442 | Elo | 1691 |
| #122 of 240 | Rank | #26 of 240 |
| −0.2 | Offense ratingPoints per game above league average scored, opponent-adjusted. | +4.6 |
| +0.5 | Defense ratingPoints per game below league average allowed, opponent-adjusted. Positive is good. | +7.2 |
| 1409 | Strength of scheduleMean Elo of opponents faced this season. | 1396 |
Elo drives the winner call. Offense/defense ratings drive the total.
Advanced
| PUR | ILL | |
|---|---|---|
| −2.2 | SP+ (this season)Bill Connelly's SP+ rating, points above average. | +10.4 |
| 0.114 | Offense PPA / playPredicted points added per play, garbage time excluded (CFBD). | 0.210 |
| 0.266 | Defense PPA / playPPA allowed per play — lower is better. | 0.198 |
| 43% / 48% | Success rate (off / def) | 48% / 45% |
| 1.24 / 1.21 | Explosiveness (off / def) | 1.17 / 1.19 |
| 698 | Talent composite247Sports team talent composite for the current roster. | 704 |
| 48% | Returning production | 21% |
Advanced stats are from 2025 until this season has about three games. Source: CollegeFootballData.
Head to head
| 2025 | ILL 43 at PUR 27 | ILL · ILL covered |
| 2024 | PUR 49 at ILL 50 | ILL · PUR covered |
| 2023 | ILL 19 at PUR 44 | PUR · PUR covered |
How the margin was built
- Rating gap
- ILL +13.8 pts
- Home field
- ILL +— pts
- Rest
- Even
- Weather / roof
- — pts on the total
- Model margin
- —
- Model total
- —
Market
- Spread
- —
- Total
- —
- Moneyline
- —
Per-book prices appear once the multi-book feed has this game (about a week out).
Informational only. Winner probabilities are backtested and calibrated; spread and total calls are tracked leans. 21+, 1-800-GAMBLER.