Any advantage a bettor has over the bookmaker or casino on a specific wager.
An edge is any mathematical advantage you believe you have on a bet. In casino games, the house normally has a built-in edge based on the published rules. In sports betting, an edge means your estimated true probability is higher than what the odds imply.
Edge can come from many sources: stronger information, better models, slow-moving lines, promotions, or pricing mistakes. The key is that your assumed edge must be large enough to overcome the vig, execution risk, limits, and model error.
Without an identifiable edge, you're gambling — not investing. A useful edge claim should be explainable: what assumption creates it, what source supports it, and what could make it wrong.
A sharp projects a Warriors-Suns total at 228.5 using a team-pace and efficiency model, while Caesars posts the line at 231.5 Under -110. The 3-point gap between fair value and market price creates a measurable edge: at -110 the break-even is 52.38%, but the model implies the Under hits closer to 57%.
Expected value per $100 bet is (0.57 × $90.91) − (0.43 × $100) = +$8.82, a 4.4% edge. Over 500 bets at $100 each, that projects to roughly $4,400 profit. Edge shrinks quickly as bet limits increase and the market corrects, so sharp bettors hit early-week numbers at Pinnacle and Circa before public money compresses the gap.
<p>A sharp projects a Warriors-Suns total at <strong>228.5</strong> using a team-pace and efficiency model, while Caesars posts the line at <strong>231.5 Under -110</strong>. The 3-point gap between fair value and market price creates a measurable edge: at -110 the break-even is 52.38%, but the model implies the Under hits closer to 57%.</p><p>Expected value per $100 bet is <strong>(0.57 × $90.91) − (0.43 × $100) = +$8.82</strong>, a 4.4% edge. Over 500 bets at $100 each, that projects to roughly <strong>$4,400 profit</strong>. Edge shrinks quickly as bet limits increase and the market corrects, so sharp bettors hit early-week numbers at Pinnacle and Circa before public money compresses the gap.</p>
Convert probability, odds, and stake into expected value before you act.
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Continue learningThe average amount you can expect to win or lose per bet over time.
The commission a sportsbook charges on a bet, built into the odds.
The difference between the odds you bet at and the final odds at market close.
A professional or highly skilled bettor whose action influences line movement.
Any advantage a bettor has over the bookmaker or casino on a specific wager.
<p>A sharp projects a Warriors-Suns total at <strong>228.5</strong> using a team-pace and efficiency model, while Caesars posts the line at <strong>231.5 Under -110</strong>. The 3-point gap between fair value and market price creates a measurable edge: at -110 the break-even is 52.38%, but the model implies the Under hits closer to 57%.</p><p>Expected value per $100 bet is <strong>(0.57 × $90.91) − (0.43 × $100) = +$8.82</strong>, a 4.4% edge. Over 500 bets at $100 each, that projects to roughly <strong>$4,400 profit</strong>. Edge shrinks quickly as bet limits increase and the market corrects, so sharp bettors hit early-week numbers at Pinnacle and Circa before public money compresses the gap.</p>
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