How No-Vig Betting Works
Sports betting math explained — no jargon, no fluff.
Every sportsbook builds a margin — called the vig or vigorish — into every betting line. At standard -110 odds on both sides, the book takes roughly 4.5 cents of every dollar wagered regardless of outcome. Mora Bets strips this margin to show you the true probability the market assigns to each outcome.
What Is the Vig?
If a coin flip were offered at -110 on both heads and tails, betting $110 on heads wins $100. Betting $110 on tails wins $100. But if 50% of bettors take each side, the book collects $220 in bets and pays out $210 — keeping $10. That $10 is the vig. Mora Bets removes it to reveal the true 50/50 probability underneath.
How No-Vig Probability Is Calculated
Convert each side's American odds to implied probability. Sum the two probabilities — the excess above 100% is the vig. Normalize each side by dividing by the total. The result is the no-vig probability: what the sharp market actually believes, without the house edge distorting the number.
Frequently Asked Questions
What is the vig in sports betting?
The vig is the commission a sportsbook builds into every betting line. At standard -110 odds on both sides, the sportsbook takes 4.5 cents of every dollar wagered. Mora Bets removes this margin to show you the true probability the market assigns to each outcome.
What is no-vig probability?
No-vig probability is the true implied probability of a bet after removing the sportsbook's built-in margin. It tells you what the market actually believes about the outcome, without the house edge distorting the number.
How does Mora Bets calculate true probability?
Mora Bets converts American odds to implied probability for both sides of a bet, sums them to find the total vig, then normalizes each side to 100% to reveal the true market consensus probability.
Is Mora Bets free?
Yes. Mora Bets is completely free. No subscription, no signup, no picks service. Just the math, updated daily before first pitch.
What sports does Mora Bets cover?
Mora Bets currently covers MLB (baseball) and NHL (hockey) with daily picks updated every morning. NFL coverage is available during the football season.