American odds\n\n For favored bets, the bet odds will start with a negative number and they tell you how much you need to bet to winR$100. If the odds are -110, a common number for a bet involving a spread, you would need to betR$110 to winR$100. If your odds are -200, you would need to betR$200 to winR$100.

For example, a bet placed at +200 in American odds (2/1 in fractional or 3.00 in decimal) has a 33.33 percent implied winning probability. A bet placed at -200 in American odds (1/2 in fractional or 1.50 in decimal) has a 66.67 percent implied winning probability.