If there’s a positive number, you’re looking at the underdog, and the number refers to the amount of money you’ll win if you bet $100. The negative number indicates how much you’d need to bet to win $100. Negative numbers signify the favorite on a moneyline bet. The – and + on a sports betting line indicates both your potential payout and whether you’re betting on the favorite or the underdog in moneyline odds. What Do the + and – Mean in Sports Betting? When you see -150, +230, or any other three-digit number with a minus sign or plus sign in front of it, you’re dealing with American betting odds.
You may hear bettors refer to this amount as “ the juice” or “ cut” or “ vig(orish).” American Odds Explained
Odds also reveal how much the book is charging to take your bet.
Your sportsbook may manipulate the odds to incentivize bets on a certain side, and the sum of the probabilities for a single event will always surpass 100 percent because the sportsbook takes a cut that is baked directly into the odds.
