Correlated Parlay
A parlay where the outcomes are statistically related. One winning increases the chance of the other winning.
A correlated parlay combines bets whose outcomes are positively related. If one outcome tends to happen with another, they are positively correlated. Sportsbooks price same-game parlays (SGPs) carefully to account for correlation risk.
Why Correlation Matters
Standard parlay math assumes legs are independent. But if you parlay "Patrick Mahomes over 300 passing yards" with "Chiefs win outright," these are correlated: if Mahomes throws for 300+ yards, the Chiefs are more likely to win. A winning Mahomes performance increases both legs' chances simultaneously.
Books and Correlation
Most sportsbooks restrict or heavily juice correlated bets, especially on the same game. Same-game parlays (SGPs) are priced to capture correlation risk. Betting across different sports or truly independent outcomes avoids this issue.
Key Takeaways
- Correlated legs are statistically related; one affects the other's probability.
- Books price same-game parlays to account for correlation.
- Parlaying correlated outcomes across books can offer hidden edge.
Examples
- Parlaying 'team wins' with 'QB over 300 passing yards' is highly correlated.
- Parlaying 'over the total' with 'both teams score 20+ points' is correlated.
Related Terms
Test Your Knowledge
1 / 4Do you know what Parlay means?
A single bet that links two or more individual wagers for a higher payout. All legs must win.
Frequently Asked Questions
Why won't my sportsbook let me parlay two bets from the same game?
Because they are correlated. The book cannot price them as independent, so it either blocks the combination or offers it only as a same-game parlay with adjusted odds.
Are same-game parlays a good bet?
Usually not. Books build a bigger margin into same-game parlays than into straight bets, partly to cover the correlation they are pricing.