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

Contrarian sports betting is a strategy that involves betting against the public or the popular sentiment, with the belief that the public tends to be biased towards favorites and overvalues certain teams or players.