One bettor won more than a half-million dollars by hitting an insane parlay during Championship Sunday in the NFL. The lucky winner turned theirR$20 site credit on FanDuel intoR$579,000 by correctly guessing the winners and exact score of both conference championship games. There's 55 555. There's just 55 555.

Oddsmakers will set the lines according to the implied probability of either outcome happening. The sum of the probabilities exceeds 100%, as sportsbooks take a small cut on both sides of a line. Second, sports betting odds dictate how much money a bettor needs to wager to make a certain profit.