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How accurate are the NCAA Football odds?

The closing prices of 1,932 finished games since Fri 24 Nov 2023, set against what happened: the chance the market gave, with the bookmakers' margin removed, next to how often it came in. A record of what the market did, not a tip.

The market's record

1,932 games, 2 bookmakers
  • Closing favourite won 73% 1,405 of 1,932 games
  • Market Brier score 0.351 0 is perfect; a coin flip scores 0.500
  • Average closing payout 95.3% 100% minus the bookmakers' margin
  • Games covered 1,932 Fri 24 Nov 2023 to Fri 16 Oct 2026

68 of the 2,000 games finished in that time are left out: no bookmaker had a closing price on every outcome.

Market chance against what happened

0-10% chance: happened 3.1% of 224 selections 10-20% chance: happened 10.4% of 384 selections 20-30% chance: happened 24.8% of 400 selections 30-40% chance: happened 36.4% of 448 selections 40-50% chance: happened 46.1% of 466 selections 50-60% chance: happened 53.7% of 486 selections 60-70% chance: happened 63.6% of 448 selections 70-80% chance: happened 75.2% of 400 selections 80-90% chance: happened 89.6% of 384 selections 90-100% chance: happened 96.9% of 224 selections 100% 0%
Market said 0%100%
Happened
Market chancePriceSelectionsMarket saidHappenedDiff
0-10% 10.00 or longer 224 7.0% 3.1% -3.9 pts
10-20% 5.00 to 10.00 384 15.1% 10.4% -4.7 pts
20-30% 3.33 to 5.00 400 25.1% 24.8% -0.3 pts
30-40% 2.50 to 3.33 448 35.0% 36.4% +1.4 pts
40-50% 2.00 to 2.50 466 44.8% 46.1% +1.3 pts
50-60% 1.67 to 2.00 486 55.0% 53.7% -1.3 pts
60-70% 1.43 to 1.67 448 65.0% 63.6% -1.4 pts
70-80% 1.25 to 1.43 400 74.9% 75.2% +0.3 pts
80-90% 1.11 to 1.25 384 84.9% 89.6% +4.7 pts
90-100% 1.11 or shorter 224 93.0% 96.9% +3.9 pts

Every priced outcome of every game is one selection. "Market said" is the bookmakers' average implied probability with the margin removed; "Happened" is how often that outcome came in. On the diagonal the market was right on average; above it, that kind of result happened more often than the prices said. Bands with fewer than 30 selections are left out.

Home, away

OutcomeMarket saidHappenedDiff
Home win 56.5% 57.9% +1.4 pts
Away win 43.5% 42.1% -1.4 pts

The market's average closing chance for each outcome over all 1,932 games against the share of games it won. "Home" is the first-named side.

Bookmaker accuracy

lower is better
BookmakerGamesBrier scorevs market averagePayout
Bet365 1,883 0.357 +0.006 95.7%
Unibet 1,267 0.359 -0.003 94.6%

Each bookmaker's own closing prices, margin removed, scored against the results of the games it priced; "vs market average" compares it with the bookmakers' average on the same games, so a negative figure means its prices were the closer. Bookmakers with fewer than 50 priced games are left out. Differences of a few thousandths are noise; a much higher score usually means the bookmaker's last price was captured well before the start, so it is the price in our archive being scored, not the trader.

Odds accuracy FAQ

How accurate are NCAA Football odds?
Across 1,932 finished NCAA Football games since 2023, the closing favourite won 73% of the time. The market's closing chance, with the bookmakers' margin removed, gave the home side 56.5% on average and home wins happened 57.9% of the time. The bands above show the same comparison price by price: a well-calibrated market has outcomes happening about as often as its prices say.
What is a Brier score?
The squared distance between the chances a bookmaker's prices gave and what happened, averaged over games: 0 would be perfect foresight, and on a three-way market a coin-flip price scores 0.667. The market average's closing prices score 0.351 in this league; the lowest single bookmaker is Bet365 at 0.357. Differences of a few thousandths between bookmakers are noise, not skill.
Does a well-calibrated market mean the odds cannot be beaten?
Calibration says the market is right on average, not on every game. A band where outcomes happened more often than the prices said is where the closing market under-priced that kind of result over these seasons. The bookmaker's margin, about 4.7% here, still has to be cleared: the closing line value calculator shows what a price needs to beat.