Arbs
What it is
Arbs are arbitrage opportunities: two or more bets across different books that, when staked correctly, guarantee a profit regardless of outcome. They exist because books disagree on prices, and our scanner catches those disagreements in real time.
When to use it
- You have accounts at multiple books and want guaranteed profit.
- You want to clear bonus / promo dollars with no variance.
- You want a low-risk way to bet volume while building bankroll.
How to read it
| Column | Meaning |
|---|---|
| Profit % | Guaranteed profit as a percent of total stake (across both legs). |
| Sport / League | What event this arb is on. |
| Market | Moneyline arb, spread arb, total arb, prop arb. |
| Side A / Side B | The two opposing selections at the two books. |
| Stake A / Stake B | How much to put on each side to lock in the profit (auto-computed for your bankroll). |
| Books | The two (or more) sportsbooks involved. |
| Live / Pre-game | Pre-game arbs are stable for minutes. Live arbs can disappear in seconds. |
Worked example
Example
NHL: Rangers vs Bruins moneyline arb
Side A: Rangers +150 (DraftKings) Side B: Bruins -135 (FanDuel) Bankroll: $1000 Stake A: $410 on Rangers Stake B: $590 on Bruins Profit if Rangers win: $410 * 2.50 - $1000 = $25 Profit if Bruins win: $590 * 1.741 - $1000 = $27 Guaranteed profit ~2.5%
Place both at the same time. Verify both confirmed before celebrating. If one leg moves before you placed it, the arb is gone.
Common mistakes
- Treating arbs as risk-free. Books void bets, suspend lines, and limit accounts. Operational risk is real.
- Hitting the same arb across multiple promo screens. Books pattern-match. Big arb volume on the same matchup attracts limits.
- Forgetting line shop after the first leg lands. If the second leg moves between clicks, recompute or kill the trade.
- Over-staking on live arbs. Live odds move in seconds. The arb you saw may already be dead. Smaller is safer.
- Ignoring withdrawal friction. Arbs are useless if you cannot get your money out. Test withdrawals on every book first.