Bettor Ed Blog

Bettor Ed’s NFL Teaser Calculator takes the guesswork out of teasers by using historical game data and consensus lines to estimate true cover probabilities and fair odds. Learn how to plug in your legs, compare prices, and only fire when the math shows real expected value.

If you're taking the step from recreational bettor to sharp, breakeven percentage is the first number you should know for any bet. This guide will provide clear definitions, correct formulas, worked examples, common traps, and quick mental math so you can use it today.

When the Powerball jackpot climbs into the billions, the first question isn’t just “Should I buy a ticket?”—it’s “Is it actually worth anything?”

The Kelly Criterion is a bet-sizing formula that uses your edge and the odds to recommend how much of your bankroll to wager for maximum long-term growth. It is powerful, but it assumes your edge estimate is realistic and your risk tolerance is high.

Expected value, or EV, is the clearest way to judge whether a sports bet is profitable. This guide explains the expected value formula, shows how to calculate EV, and breaks down how value betting works in real betting markets.