Rufus Peabody: The Modern Pro Who Bets the Process

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Many of the legends on this site are shadowy figures from an earlier era. Rufus Peabody is the modern version: a professional bettor who makes his living from wagers, not from selling picks, and who talks openly about how he thinks.

From Yale to Las Vegas

Peabody studied at Yale. After a stint at Las Vegas Sports Consultants, a firm that supplied betting lines to sportsbooks, he returned to Yale and wrote his senior thesis on psychological inefficiencies in the baseball betting market: ways in which bettors’ biases caused prices to drift from fair value.

That idea, that markets can be systematically wrong in measurable ways, became his career. He has made his living primarily from betting for well over a decade.

Massey-Peabody and Unabated

With ratings expert Kenneth Massey, Peabody co-founded Massey-Peabody Analytics, which publishes power ratings for the NFL and college football. Their ratings were published in The Wall Street Journal, and Peabody has also worked as a predictive analytics expert for ESPN.

He later co-founded Unabated, a company that builds tools for sports bettors, including odds comparisons and fair-price calculations of the kind described in our devig guide.

Blending the model with the market

In a 2018 interview with RotoWire, Peabody described how Massey-Peabody tested the best way to combine its own NFL predictions with the market’s. Their answer was a blend weighted slightly toward the market: roughly 45% model and 55% market.

It’s a telling result from someone whose model is good enough to publish. Even a strong model knows less than the market as a whole, and the best estimate comes from combining the two. Bill Benter reached the same conclusion in Hong Kong racing decades earlier; see his profile.

For most bettors the practical lesson is simple: start with the sharp market price, then adjust only when you have a specific, tested reason. That’s how +EV bettors use Pinnacle’s line.

Bet the Process

Since 2017, Peabody has co-hosted the Bet the Process podcast with Jeff Ma, a former member of the MIT blackjack team whose story inspired the book Bringing Down the House. The show covers betting strategy, markets, golf and NFL analysis, and increasingly the rise of exchanges and prediction markets.

The title is the philosophy. A good bet is a good bet whether it wins or loses. You judge yourself on the quality of your decisions and let results follow over time.

What you can borrow from Rufus Peabody

1. Blend, don’t replace. Combine any view you have with the sharp market price. If you don’t have a tested model, the devigged sharp line is your fair price.
2. Judge decisions, not outcomes. Track closing line value to see whether your process works long before results do.
3. Look for systematic biases. Peabody’s thesis was about predictable bettor psychology. Popular teams, overs, and headline-driven markets are still where prices tend to drift.
4. Stay humble about your edge. If a published model weights the market at 55%, your hunches deserve even less. Size bets with a fraction of Kelly.
5. Treat it as a craft. Keep learning. Markets evolve, and edges that worked last season may not work next season.