The '-' odds show how much you'd need to bet to win $100. The '-' wagers have a higher chance of paying out and the '+' wagers a lower chance. The - and + next to the odds are used to show the potential payout and whether the wager is more or less likely to win. Odds are the measure of how much you can win per $100 wager. Cha-ching.Īmerican odds - the format you'll see most often on North American sports betting sites - begin with either a minus sign (-) or a plus sign (+). The most important part of sports betting is the odds, because that's how you determine how much money you can win on a bet.