Sports Analytics
Expected Value in Sports Betting
Expected value is the average result of a bet repeated forever. It is the only number that separates a good bet from a bet that happened to win.
6 min read
Tag
Implied Probability
Every BestSlip article tagged Implied Probability — 4 guides covering how it works, how the maths is done and which tools apply.
4 articles
Betting Strategy
How to Remove the Vig From Betting Odds
A posted price is two things at once: the sportsbook's estimate of a probability, and its charge for taking the bet. Separating them is the single most useful calculation in betting.
Updated 5 min read
Betting Guides
American Odds vs Decimal Odds: Converting Between Formats
-110, 1.91 and 10/11 are the same number in three notations. Here is how to move between them without a calculator, and why professionals tend to think in decimal.
Updated 4 min read
Betting Odds
How to Read American Betting Odds
The plus and minus signs are not difficulty ratings. They are two different arithmetic instructions, and once you know which is which, every price on the board reads the same way.
Updated 5 min read