Sports betting questions, answered. With the math shown.
One canonical page per question. Each answer states the direct result first, shows the formula or worked example behind it, and says plainly what the metric or method cannot tell you. No answer here promises an outcome; betting involves risk.
The questions. Each links its canonical answer.
Every entry below points at the single page that owns the full answer: a definitional page, the methodology, a calculator, or a Learn article. The index grows as new answers are published.
What is closing line value?
Closing line value is the difference between the odds you took and the market's final, de-vigged price at close. The full answer covers the formula, a worked example, and what CLV cannot tell you.
How does CLV.gg detect a betting edge?
Capture the offered price, build a de-vigged sharp consensus, score the gap between them, then track the entry to the close. The methodology page documents each step.
How do you remove the vig from sportsbook odds?
Convert every side of the market to an implied probability, then normalize so the probabilities sum to 100%. The de-vig calculator runs power, multiplicative, and additive methods side by side.
How much of a bankroll should a single bet risk?
The Kelly criterion sizes a stake from your edge and the offered odds. Most practitioners bet a fraction of full Kelly to reduce variance. The calculator shows full Kelly, fractional Kelly, and the resulting stake.
How does an arbitrage bet work?
An arb exists when books price the same market so that the combined implied probability is under 100%. Split stakes correctly and every outcome returns more than the total risked, subject to execution risk: limits, line moves, and void rules can break the position.
Does closing line value work on prediction markets?
Yes, with different math. Exchange fills are probabilities, there is no vig to strip from the fill, and taker fees come off the price. The article covers the exchange version of the CLV formula.
Why do sportsbooks limit winning bettors?
Sportsbook risk teams can reduce limits on accounts whose action predicts line movement. The guide covers which patterns draw review and how bettors manage execution and record-keeping.
What do maker and taker fees do to an exchange edge?
Fees come off your fill, not the displayed price. A price that clears fair value before fees can be negative expectation after them. The article works through the examples.
How is Polymarket pricing different from sportsbook odds?
Sportsbook odds embed a bookmaker margin. Exchange prices are order-book fills set by participants, with fees charged separately. Comparing the two requires de-vigging one and fee-adjusting the other.
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