A Horn or craps-11 bet, as it is typically called, is a one-roll wager that on the next roll of the dice their sum will be 2, 3, 11 or 12. If they total anything different (4, 5, 6, 7, 8, 9 or 10), you lose. If 3 or 11 appears, you are paid 15:1. If 2 or 12 rolls, the payoff is 30:1.
The improbable win is considered to be one of the biggest single-game upsets in the history of the World Cup. From a sports betting perspective, it was also historic, as Saudi Arabia closed at +1200 on the moneyline at FOX Bet, while Argentina was -667.