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Most bettors don't know what the number in front of them means.
This is the part sportsbooks don't explain and most tout accounts skip past to get to the pick. Odds, probability, the vig, staking, and how to keep this entertainment instead of a problem. Free forever. Picks are the product; this is not one of them.
The full learning path
Build the skill before you risk the bankroll.
Fourteen focused lessons, arranged in the order the ideas actually build on each other. Start anywhere, or work straight through.
Odds and Probability
Read the price before you read the pick.
Bet Types
Know exactly what the market is asking you to buy.
Finding an Edge
Separate a good prediction from a good bet.
Managing Risk
Protect the bankroll before you chase a return.
Betting Responsibly
Keep betting in its proper place: entertainment.
Why we're building this
A price only means something once you know what it implies. Most of the damage in sports betting isn't bad luck, it's betting a number without knowing what it actually costs to be wrong. This curriculum stays free permanently, whether or not you ever subscribe to the picks. Read how the model works next, or go straight to today's board to see the ideas applied to a real slate.
Common questions
Minus means favorite, and the number is what you'd have to risk to win $100. Plus means underdog, and the number is what a $100 bet would win. See American Odds, Explained.
Every posted price converts to a percentage. Because the book builds in a cut, both sides of a bet add up to more than 100%. See Implied Probability and the Vig.
Moneyline is a straight pick of who wins. Spread makes the favorite win by more than a set margin. Total is a bet on the combined score of both teams, over or under a number. See Moneyline, Spread, and Total.
No. The house's cut compounds with every leg you add, a 6-leg -110 parlay keeps close to a quarter of what a fair payout should be. Fine for a fun bet, not something to build a strategy around. See Parlays and Why the Math Turns Against You.
Market price is whatever number is posted at a sportsbook. Fair price is what that same bet would cost with the vig stripped out. See Fair Price vs. Market Price.
Whether the price you bet beat the price the market closed at. Consistently beating the close is the earliest honest signal of a real edge, showing up before results do. See Closing Line Value.
Most bettors size bets in units, usually 1 to 2% of a bankroll set aside just for betting, and bet the same size regardless of how confident they feel. See Bankroll Management and Bet Sizing.
Yes. Even a genuine statistical edge can lose over a short stretch, a 55% edge can realistically land anywhere from 7 to 15 wins in 20 bets. Short stretches don't prove much either way. See Variance: Why a Good Process Still Loses Sometimes.
A $10 bet at 2.50 returns $25 total, $15 profit plus the original $10 stake. Decimal odds show the whole payout per dollar staked, not just the profit. See Fractional and Decimal Odds.
A bet on an individual player's statistical performance in a game, like total bases, strikeouts, or hits, set as an over/under number, rather than a bet on which team wins. See Player and Team Props.
Generally yes. Books build in a wider cut on live lines because they have to reprice in real time with far less certainty than a pre-game line that had hours to sharpen. See Live and In-Game Betting.
A program run by a state's gaming commission that blocks you from every licensed sportsbook in that state for a period you choose, commonly from one year up to a lifetime. See Setting Limits Before You Need Them.