How a price is built
A betting price is a probability with a fee on top. These pages take that apart in order.
Value Betting Explained
Guide Value Betting Explained Value betting is not about sounding smarter than the market. It is about comparing price to probab…
Bookmaker Margin and Vig Explained
Guide Bookmaker Margin and Vig Explained The vigorish is the structural mechanism through which every sportsbook generates reven…
How Sports Betting Markets Work
Guide How Sports Betting Markets Work Sports betting is a market. Not a casino game, not a lottery, not a coin flip with juice a…
Why Odds Differ Between Sportsbooks
Guide Why Odds Differ Between Sportsbooks Two sportsbooks can post different prices on the same game without either one being wr…
How Sportsbooks Set Opening Lines
Guide How Sportsbooks Set Opening Lines Before a single dollar is wagered, sportsbooks must post a number. That opening line is …
Closing Line Value Explained
Guide Closing Line Value Explained: The Market's Most Reliable Benchmark Closing line value measures whether the price you took …
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Why lines move
What moves a number after it opens, who moves it, and which explanations do not survive contact with the data.
Market structure
How the market itself behaves: who makes it, how deep it is, how efficient it is, and where the operator's risk limits b