What is the mechanism behind Fanduel's round robin betting?

FanDuel's round robin betting mechanism allows a bettor to create multiple parlay bets from a larger list of teams or totals. Essentially, it involves selecting three or more teams that the bettor believes will win their respective matchups. A round robin then takes these selections and creates all possible combinations of parlay bets for those teams. Each parlay within a round robin bet is treated as an independent wager; if one leg of a parlay loses, it only affects that specific parlay and not the entire round robin bet. The advantage of this system is that it mitigates some risk compared to a straight parlay, as not all selections need to win for the bettor to receive a payout – as long as one of the smaller parlays within the round robin wins, the bettor can still earn some return, though it might be less than the initial stake if most other parlays lose.