A +150 line means a $100 bet returns $150 in profit if it wins — it's the price on an underdog.
Plus numbers always represent underdogs. The further from zero, the bigger the underdog. +150 is a moderate underdog. +400 is a heavy underdog. +800 is a long shot. The math is simple. +150 means for every $100 you risk, you win $150 in profit. Bet $50, win $75. Bet $200, win $300. The ratio stays the same regardless of stake size. On a winning bet, you get your stake back plus the profit. $100 on +150 returns $250 total — your $100 back plus $150 in winnings.
Example
The Mets are +150 against the Braves. You bet $60 on New York. The Mets win. You get $150 back — your $60 stake plus $90 profit.
What it means for your decision
A plus price is the market's honest statement that this side is less likely to win. The question isn't whether the underdog will pull it off — it's whether +150 is the right price for how often they actually will. If you think the Mets win 45% of the time tonight and +150 implies they'll win 40%, that's a pricing gap worth noticing. Your decision is always yours.
Frequently asked
What does +150 translate to as a percentage?
Roughly a 40% implied win probability before juice. The formula is 100 ÷ (plus odds + 100), which for +150 is 100 ÷ 250 = 40%.
Is +150 a good underdog price?
Good depends on the actual matchup. +150 is moderate value — common on competitive games where one side has a slight edge.
What's the biggest plus-money bet I should take?
There's no universal cap. Bigger plus prices require more confidence the market is wrong, because underdogs win less often.
Why do some underdogs have small plus numbers like +105?
Because the matchup is close to even. +105 means the book sees this side winning about 48% of the time — barely an underdog at all.
Related terms
In the glossary