Each new leg multiplies your potential payout — and your risk. A 5-leg parlay at -110 each (52.4% implied per leg) has only a 4.0% chance to hit. Use the EV calculator to check if a parlay is +EV before placing.
Parlays look like high-upside bets — and they are. They're also priced with a built-in commission, so your long-run expected value is negative on most parlays. That said, certain parlay types are worth betting:
Same Game Parlays for entertainment. They carry double-digit holds. Bet small, treat them as lottery tickets, don't expect to grind profit.
2-3 leg parlays of independent +EV bets. If you've identified two genuinely +EV singles, parlaying them maintains the +EV — provided the legs are uncorrelated.
Round robins for hedging. A round robin breaks a list of teams into smaller parlays. You sacrifice some upside but survive a single-leg loss.
Avoid: 6+ leg parlays, parlays with heavily correlated legs, "boost" parlays priced 30-50% off true value.