Parlay Betting Explained
A parlay combines two or more individual bets into a single ticket. Every leg has to win for the parlay to cash; but the payout multiplies fast.
How parlay payouts work
The decimal odds of each leg are multiplied together. A 3-leg parlay where each leg is -110 (1.91 decimal) pays roughly 6-to-1 on a winning ticket.
3-leg NFL parlay example
| Chiefs -7.5 | -110 (1.91) |
| Bills -3 | -110 (1.91) |
| Vikings/Bears Over 47.5 | -110 (1.91) |
| Combined | +595 (6.95) |
$10 stake → $59.50 profit if all three legs hit.
Same-game parlays (SGPs)
SGPs combine multiple markets from a single game; e.g. Chiefs -7.5, Patrick Mahomes over 285.5 passing yards, and Travis Kelce anytime touchdown. Because the legs are correlated, the sportsbook prices SGPs lower than a true parlay would imply. FanDuel and DraftKings have the most flexible SGP builders in Iowa.
The math is brutal
Each -110 leg is a 50% true probability. A 3-leg parlay of independent -110s implies 12.5%; but is priced at +595 (~14.4% break-even). The sportsbook's edge compounds with every leg you add. A 10-leg parlay at -110 each pays around 645-to-1 but the true odds are closer to 1024-to-1.
Parlays are entertainment-priced. Treat them like lottery tickets; small stakes, expect to lose most.
Parlay insurance promos
Most Iowa books run "parlay insurance" deals where if one leg of a 4+ leg parlay loses, you get your stake back as a bonus bet. Watch for these on DraftKings, FanDuel and BetMGM during NFL Sunday and college football Saturday.
Smart parlay strategy
- Cap leg count at 3-4. Hit rate falls off a cliff after that.
- Mix correlated underdogs. Chiefs ML + over total is more likely to win than two random favorites because a Chiefs blowout is itself a high-scoring scenario.
- Round-robin. Instead of a 4-leg parlay, place six 2-leg parlays from the same picks. Lower variance, smaller payouts.
- Stake small. 1% of bankroll max per parlay ticket.