What Does -280 Mean in Sports Betting?

-280 is a favorite price. The minus sign means the team is favored, and the number is how much you must risk to win $100. At -280 you risk $280.00 to win $100, because the market thinks this outcome is more likely than not.

+280 is the underdog price: a $100 bet at +280 wins $280.00 profit ($380.00 back), with an implied probability of about 26.3%. -280 is the reverse, a favorite price where you risk $280.00 to win $100. At a sportsbook, the underdog opposite a -280 favorite is usually priced below +280, because the vig comes out of both sides. See the full +280 odds breakdown.

A $100 bet at -280 returns $135.71 total, which is $35.71 in profit. Scale it to any stake with the betting calculator, or add -280 as a leg in the parlay calculator to see what it does to a multi-leg payout. The payout is the same idea at any book; what changes is how much vig is buried in the price.

-280 implies a win probability of about 73.7%. That is the break-even rate: if you think the real chance is higher, the bet has value. Devig the market with the no-vig calculator to compare it to the fair number. On a prediction market, the same 74% reads as a contract priced near 74 cents; the prediction market calculator converts between the two.

-280 American equals 1.36 in decimal odds and 9/25 in fractional odds. Decimal is the easiest format for comparing prices, since a bigger number always means a bigger payout. Convert any price with the odds converter.

Every American price at a sportsbook includes the vig. BettorEdge is a peer-to-peer betting exchange: you trade at market-fair odds with other bettors, so the same outcome can pay more than -280 and you keep more of the win. No sportsbook sets the line.