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Guides / Sports

IntermediateSports5 min read

Sports betting: how overround works

Time saverBookmakers build a margin into odds. At -110 on both sides the break-even win rate is 52.38% and the overround is about 4.76%. Beat that or you lose long-term.

Implied probability

Decimal odds of 1.91 imply a 52.4% chance. Add both sides of a two-way market and anything above 100% is the bookmaker's margin.

Finding value

Value exists when your estimated probability exceeds the implied one. Compare prices across several books and avoid long parlays that stack margin.

Educational content, not financial or legal advice. Gambling involves risk. 18+.

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Expected value: the one concept that explains everything

Time saverEV = sum of (probability x outcome). A game has positive EV only if you hold an edge. Use EV to compare bonuses, bets and game choices before you play.

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Casino licences ranked by protection

Time saverStronger regulators such as the UK Gambling Commission, Malta MGA and US state regulators offer real dispute routes. Weaker or offshore licences offer less. Always verify the licence number.