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Analysis

Power Ratings to Fair Value: Inside the CFB Model

How the college football model converts power ratings into fair value: a simulation-to-probability pipeline, a de-vigged market consensus, and the price gaps it flags.

By Redshirt Editorial · 2026-07-10
Analysis
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Key takeaways
  • The model turns power ratings into title probabilities by simulating the season, then compares the output to de-vigged market prices to set fair value.
  • Texas, Oregon, Notre Dame and Miami all carry a model fair value of 8.5%, the tightest cluster at the top of the national title board.
  • Ohio State and Indiana sit at 6.9% fair value, with Georgia at 5.2% and LSU at 4.4% on the current Kalshi-sourced board.
  • Best prices run above fair value across the board (Texas at 11c versus 8.5%), the signature of book margin baked into raw contract quotes.
  • Fair value is a modeled estimate, not a guarantee; both the model and the market can be wrong on any single season outcome.

The model turns power ratings into fair value in three steps: rate every team, simulate the season thousands of times to convert those ratings into a title probability, then line that probability up against de-vigged market prices. The output is a single percentage per team. On the current national title board, that process puts Texas, Oregon, Notre Dame and Miami at 8.5%, Ohio State and Indiana at 6.9%, Georgia at 5.2% and LSU at 4.4%.

How do power ratings become a win probability?

A power rating is only a relative strength number. It becomes useful when two ratings are placed on either side of a game and translated into a margin, then into a win probability for that single matchup. Home field, opponent quality and schedule all enter here, so a strong rating against a brutal slate does not automatically produce a high title number.

The season is then simulated many times. Each simulated run plays out every game, resolves the conference races and the bracket, and records who finishes as champion. Run it enough times and the share of runs a team wins becomes its raw title probability. This is why the model can separate a team that is rated highly but schedule-blocked from one with a cleaner path.

What turns a raw probability into fair value?

Raw simulated probabilities are not directly comparable to screen prices, because listed contract quotes include margin. To make the comparison honest, the market side is de-vigged: the full field of prices is normalized so the implied probabilities sum toward 100% rather than the inflated total a raw board carries. The result is a market-consensus fair value that can be set beside the model's simulated number.

Where the two agree, the board is efficient and there is nothing to do. Where they diverge, the gap is the signal. The model's job is not to be louder than the market but to flag the specific contracts where its simulated probability and the de-vigged consensus disagree enough to matter.

Model fair value, national title board
Texas8.5%
Oregon8.5%
Notre Dame8.5%
Miami8.5%
Ohio State6.9%
Indiana6.9%
Georgia5.2%
LSU4.4%

Why do the top four all read 8.5%?

The four-way tie at the top is the model refusing to fake precision. Texas, Oregon, Notre Dame and Miami all resolve to 8.5% because the simulated season places them in one tier with paths of similar quality. Small rating differences between them are inside the noise of a season that has not been played, so the model reports them as equals rather than inventing a ranking.

Below that tier the spacing widens in a readable way. Ohio State and Indiana at 6.9% form the next step, Georgia at 5.2% sits alone, and LSU at 4.4% closes the group shown here. Each drop reflects a thinner slice of simulated championships, not a subjective seeding.

Where does price diverge from fair value?

Best prices sit above fair value across the board, which is the expected footprint of margin in raw quotes. Texas is 8.5% fair value against a best price of 11c on Kalshi; Ohio State is 6.9% against 9c; Georgia is 5.2% against 7c; LSU is 4.4% against 6c. The consistent gap between the percentage and the cent price is the vig the de-vig step strips out.

That is the whole point of putting fair value next to best price: it shows how much of a quote is probability and how much is margin. For readers comparing venues, the FADE code on Kalshi is one entry point, though the model treats the price itself, not the promo, as the variable that decides whether a contract is worth attention.

Best price on Kalshi, national title
Texas11c
Ohio State9c
Georgia7c
LSU6c
Texas A&M4c
Oklahoma3c
Ole Miss3c

What the fair value number does not promise

Fair value is a modeled estimate, not a forecast of the season's result. It compresses thousands of simulated outcomes into one number, and both the ratings that feed it and the market it is checked against can be wrong. A team at 8.5% loses the title in the large majority of simulated runs; the figure describes a distribution, not a destiny.

The model earns its keep over many contracts and many seasons, not on any single ticket. Treated that way, the pipeline from power ratings to fair value is a lens for spotting where price and probability part company, and nothing more than that.

TeamsTexasOhio StGeorgiaLSUMiamiIndiana
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Frequently asked questions

How does a college football model turn power ratings into fair value?

Power ratings feed a matchup engine that estimates each game's win probability, then the full season is simulated many times to produce a title probability. That percentage, after removing market margin from the comparison, is the model's fair value.

What is the difference between fair value and the best price?

Fair value is the model's estimate of true probability after de-vigging. Best price is the cheapest live contract quote across venues, which typically sits above fair value because raw prices carry margin.

Why do Texas, Oregon, Notre Dame and Miami share the same fair value?

All four land at 8.5% because the simulated season places them in a near-identical tier at the top of the board. The model sees no meaningful separation among the four right now.

Does a higher fair value mean a contract is worth trading?

Not on its own. Value depends on the gap between fair value and the price paid, so a contract is only interesting when the market price sits at or below the model's number.

About the author
Redshirt Editorial

Redshirt Analytics editors cover college football prediction markets: how contracts price the season, where the value sits, and how the platforms compare.