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Matchup preview

Notre Dame vs Purdue

Notre Dame visit Purdue in Week 4. The model favors Notre Dame by 26.4. Win probability, the tale of the tape, and the all-time series, all from real data.

Win probability
95%
5%

Model win probability from SP+ ratings + home-field edge.

The read
Model analysis · September 23 · refreshed weekly

Model and market are locked in agreement here. SP+ rates Notre Dame at 26.7 (third nationally) against Purdue at -2.1 (75th), a gap that projects a 26.4-point Notre Dame margin. The consensus line sits at Purdue +27.8 with a 58.3 total, and both the model and the market price Notre Dame at 95% to win. The ProphetX exchange pushes slightly further, with Notre Dame offered at -3100 (97% implied) versus Purdue at +2000. There is no daylight between the rating gap and the price.

The unit ranks explain the spread: Notre Dame grades fourth on offense and sixth on defense, while Purdue sits 61st and 97th. Series history reinforces the direction, with Notre Dame holding a 4-0 edge and a 56-30 win in the 2025 meeting.

Results this season track the ratings. Notre Dame is unbeaten, having handled Wisconsin 41-13, Rice 52-0 and Michigan State 27-10. Purdue beat Indiana State 44-19 but fell to Wake Forest 38-36 and at UCLA 52-38. The simulation projects 10.2 wins and a 74.8% Playoff chance for Notre Dame against 3.4 wins and 0.1% for Purdue.

Model and market fully agree: Notre Dame at 95% with a 26.4-point projected margin, and the numbers back the price.

Matchup odds
Consensus line · 2 books
Spread
ND -27.8
Total (O/U)
58.3
Favorite
ND
Moneyline win probability (implied from the spread)

Real consensus line across 2 sportsbooks. Spread and total are the current market number; the win probabilities are implied from the spread.

Matchup odds price history
The market to win this game · daily prices, colored by the favorite
Notre Dame96%+3 ptsvsPurdue4%-3 pts
0%25%50%75%100%Notre Dame favoredPurdue favoredSep 13Sep 15Sep 17Sep 19Sep 21Sep 23

Real daily prices from the market to win this game, shown as Notre Dame's win price; Purdue's is 100 minus it (the same market's other side). Above the 50% line Notre Dame is favored, below it Purdue is, and each candle takes the favored team's color. Kalshi shows open-high-low-close candles (filled body closed up, hollow closed down). As of Sep 23.

Tale of the tape
Percentile vs FBS · 2025 stats, 2026 SP+
#3SP+SP+: Bill Connelly's tempo- and opponent-adjusted efficiency rating, expressed in points above average.#75
#3FPIFPI: ESPN's Football Power Index, an overall measure of team strength.#86
2243EloElo: a rating that rises or falls after each game based on the result and the quality of the opponent.1227
10.7%Title oddsDe-vigged consensus probability to win the national title, averaged across the prediction markets we track.-
Notre DamePurduesolid = better, faded = trailing
What these metrics mean
SP+. SP+: Bill Connelly's tempo- and opponent-adjusted efficiency rating, expressed in points above average.
FPI. FPI: ESPN's Football Power Index, an overall measure of team strength.
Elo. Elo: a rating that rises or falls after each game based on the result and the quality of the opponent.
Title odds. De-vigged consensus probability to win the national title, averaged across the prediction markets we track.
Off PPA. PPA (Predicted Points Added): the average point value each play adds. Higher is better for offense, lower for defense.
Success. Success rate: the share of plays that stay on schedule (roughly 50% of needed yards on 1st down, 70% on 2nd, 100% on 3rd/4th). Higher is better.
Explosive. Explosiveness: the average value of a team's successful plays, i.e. how big its good plays are when they hit.
Yards/game. Total yards gained per game.
Success allowed. How often the defense allows an on-schedule play (enough yards for the down). Lower is better.
Havoc. Havoc rate: the share of plays where the defense makes a tackle for loss, forced fumble, interception, or pass breakup.
Yards allowed. Total yards allowed per game. Lower is better.
Efficiency profile
Percentile vs FBS · 2025
Recent series
Notre Dame lead 4-0
Notre Dame have won the last 4
20142025
Head to head
Every meeting in our records
2025
56-30
Notre Dame
at Notre Dame
2024
66-7
Notre Dame
at Purdue
2021
27-13
Notre Dame
at Notre Dame
2014
30-14
Notre Dame
neutral site
More Week 4 matchups
Model previews for the rest of the slate
FAQ

Frequently asked questions

How do I trade the Notre Dame vs Purdue game?

Kalshi lists winner markets for college football games. Sign up with code FADE (trade $25, get up to $500), open the Notre Dame vs Purdue market when it posts, and buy YES on your side; the price in cents equals the market's implied win probability. You can sell before kickoff or settlement at the current price.

When do Notre Dame and Purdue play?

Week 4 of 2026, on Sep 26, 2026 at Purdue.

Who is favored?

The model projects Notre Dame by 26.4 (95% win probability), from SP+ ratings.

What is the all-time series?

Notre Dame lead 4-0 over the meetings in our records.

Full schedule → · Both teams' playoff odds, from 10,000 simulations →

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