Coin Drop

You introduce a game called coin drop, but before you play you make a prediction as to whether your spectator will win or lose. This is folded up and placed into the box at the front of the game and a clear lid is placed on top. A coin is given to your spectator and they drop it into the game, then you do the same. Whoever has the biggest score wins that game and is marked on the board. The first one to three wins. You now turn your spectator's attention to the prediction which you made earlier. You ask them to open the box take it out, unfold it and read what it says. Not only have you predicted the whether they won or lost but you also predicted the correct score.