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Archive · Monday, August 10 · 6 min read

The summer 2007 NBA prop market and the first time everyone got refunded

A single official corrupted a string of games. The fallout reshaped how integrity desks work — and how cautious the market is about props it can't independently confirm.

When the news broke, books refunded action on every game that had been confirmed compromised. The unspoken second move was harder: tighten the parameters on every prop market that depended on individual official discretion. Foul totals, free-throw totals, and pace-of-play overs all moved overnight.

The structural lesson is that markets price both outcome variance and trust. When trust takes a hit, every line that relied on it widens or disappears. If you ever wonder why an obvious-looking prop is suddenly off the board, the answer is usually not that the model can't price it. The answer is that something upstream is being audited.

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