A reference desk for betting markets
How a price is built, why it moves, and what the data actually supports. No picks, no tipping record, no handicapper rankings. Every study states its sample, its date range and its method.
Start with the mechanics
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…
Closing Line Value Explained
Guide Closing Line Value Explained: The Market's Most Reliable Benchmark Closing line value measures whether the price you took …
Why Betting Lines Move
Guide Why Betting Lines Move Once an opening line is posted, the number starts changing. These changes are not noise. They are t…
Betting Market Efficiency
Guide Betting Market Efficiency: Where Markets Are Accurate and Where They're Not Sports betting markets aggregate information f…
Kelly Criterion Calculator
Calculator Bankroll and Kelly staking Kelly sizes a bet to maximise long-run growth. It is optimal only if your probability esti…
The library
How a price is built
A betting price is a probability with a fee on top. These pages take that apart in order.
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
Staking and risk
Sizing a bet, surviving variance, and the part that is about you rather than the market.
Bet types and situational edges
What each bet type actually costs, and which situational angles hold up.
Recent studies
Original data work. Each one names its sample and its range on the page, and none of them is a pick.
A -1 Run Line Pushes 15 Percent Of The Time, And Almost Nothing Clears What It
Yankee Stadium in the Bronx. A -1 run line gives the money back when the favorite wins by exactly one, which happened in 338 of …
The Push Is The Product: 27.27 Percent Of 2026 MLB Games Are One Run Games
Everybody knows the run line as -1.5. Lay a run and a half, get plus money, lose the ticket when your team wins 4 to 3. It is th…
Baseball Totals Land On Odd Numbers 57.87 Percent Of The Time
Every totals market gives you a choice you rarely think about. You can take 7.5 or you can take 8. The half run costs about fift…
A Team Total Under 4.5 Hits 58 Percent Of The Time, Until You Check Who Is Pit
American Family Field in Milwaukee, home of the 1.97 ERA that put this question on the board. Photo: DiscoA340, CC BY-SA 4.0, vi…
A Team Total Under Is Only 59 Percent Starting Pitcher
A team total under is sold as the cleanest pitcher bet in baseball. One lineup, one number, and the guy on the mound is the whol…
Six Straight Overs In A Season Series Predicts Nothing, And The Long Streaks F
Target Field in Minneapolis, where Minnesota and Detroit put up 12, 17 and 17 combined runs in three days at the end of August. …
It does not sell or publish picks, does not claim a betting record, and does not rank handicappers. There is no live odds feed attached to it, so it never shows a current price. Consensus publishing has been paused since July 2026 and the reason is on the method page.