Ben Recht Critiques NFL Win-Probability Models Claiming Three-Digit Precision

beenwrekt · x · 2026-09-30

Berkeley researcher Ben Recht uses football analytics to illustrate the absurdity of cost-benefit analysis in a new arg min post. He takes aim at ESPN analyst Seth Walder's model, which claims to predict win probability for every NFL play to three decimal places while keeping its methodology secret.

His case study: with the Chargers facing 4th-and-3, the model said kicking a field goal gave a 53.7% win probability versus 55.6% for going for it. Recht argues such precise probabilities are always "hacky conventions" far too imprecise to justify optimal-play claims, tying the critique to his course on cost-benefit analysis.

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