Parlay vs straight bet
A straight bet depends on one outcome, while a parlay combines multiple outcomes and usually needs every leg to win.
The short version
A straight bet is one pick. A parlay links multiple picks into one ticket. Parlays pay more because they are harder to win; in most standard parlays, every leg must win for the parlay to pay.
Why parlays are tempting
Parlays turn small stakes into large potential payouts. The tradeoff is that each added leg lowers the chance of winning, even when each individual pick looks reasonable.
Risk difference
Straight bets make it easier to isolate whether your view on one market was right. Parlays combine risk, correlation, and pricing error. One bad leg can erase several correct picks.
Correlation matters
Some legs are related. If a quarterback over passing yards and a receiver over receiving yards depend on the same game script, the true combined probability may be different than multiplying independent probabilities.
Prediction-market angle
Prediction markets often let users express single-outcome views directly. Multi-outcome structures need careful settlement rules and pricing because each leg adds complexity.