What does -110 on both sides mean in terms of vig?

-110/-110 on a two-sided market means you risk $110 to win $100 on either side. The implied probabilities sum to ~104.8%, making the vig approximately 4.8%. The fair-value line for a coin-flip market would be +100/+100.

Is a higher or lower vig better for bettors?

Lower vig is always better for bettors. Sharp books like Pinnacle operate under 2% vig on main markets.

Can I use no-vig odds to find positive EV bets?

Yes — if a soft book is offering -105 on a side where the no-vig fair price from Pinnacle is +100, you have a positive-expected-value bet.

Do parlays have worse EV than single bets?

Usually yes. Each leg in a parlay carries its own vig, and that vig compounds. A -110/-110 two-leg parlay has roughly 9% negative EV. However, if every leg is genuinely +EV, the parlay can preserve or amplify that edge.

Are same-game parlays worth it?

Almost never for serious bettors. SGPs are correlated by nature, and books apply heavy correlation penalties. The house edge on SGPs is typically 30-60%.

Can sharp bettors use parlays as a strategy?

Yes, but only as a byproduct of having genuine +CLV on individual legs. Sharp bettors parlay only when it provides equal or better EV than singles.

What is the break-even parlay win rate for a 2-leg -110/-110 parlay?

A standard 2-leg -110 parlay pays +260. You need to win at least 27.8% of the time to break even. The true probability of both legs winning at fair odds is about 25%.

Can I have a positive edge and still go broke?

Yes. Even with a genuine statistical edge, variance means you can experience losing streaks that exhaust your bankroll before the edge produces positive results. This is precisely what Risk of Ruin measures.

What bankroll size do I need to keep my ROR below 5%?

At typical -110 odds with a 53-55% win rate, you generally need 60-100 units to keep ROR below 5%. The exact number depends on your average odds.

What win rate do I need to break even at -110?

At -110 odds, you need to win 52.38% of bets to break even. Any win rate above that is profitable before vig.

Does ROR change if I use Kelly staking instead of flat betting?

Yes, significantly. Kelly staking dynamically adjusts your bet size based on your edge, reducing variance and lowering ROR. Most professionals use quarter or half Kelly.

Is a 10% risk of ruin acceptable?

A 10% ROR means roughly a 1-in-10 chance of losing your entire bankroll. Most professionals target below 5%.

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