NFL parlays combine multiple bets into one wager, requiring all selections to win for a payout. Parlay types include same-game parlays, multi-game parlays, teasers, and round robins. Potential payouts increase with more legs, but so does the risk.

With Week 8 of the NFL season about to begin, there's still a relatively even split between Over results (55) and Unders (52). That difference of a mere three games is far from indicative of a true trend,