What Does +280 Mean in Sports Betting?

+280 is an underdog price. The plus sign means the team is the underdog, and the number is how much you win on a $100 bet. At +280 a winning $100 bet profits $280.00, because the market sees this outcome as less likely.

-280 is the favorite price: you risk $280.00 to win $100, and a $100 bet at -280 returns $135.71 ($35.71 profit), with an implied probability of about 73.7%. +280 is the reverse, an underdog price where $100 wins $280.00. At a sportsbook, the favorite opposite a +280 underdog is usually priced steeper than -280, because the vig comes out of both sides. See the full -280 odds breakdown.

A $100 bet at +280 returns $380.00 total, which is $280.00 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 26.3%. 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 26% reads as a contract priced near 26 cents; the prediction market calculator converts between the two.

+280 American equals 3.80 in decimal odds and 14/5 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 house margin in the middle.