Arbitrage betting
Arbitrage means betting both sides of a market at different books so that profit is locked in no matter who wins. It is related to +EV betting.
How an arb works
Suppose Draftkings offers Warriors at +120 and Fanduel offers Spurs at +120 on the same moneyline.
- Implied probs: 45.5% + 45.5% = 91%
- Anything under 100% means a risk-free edge exists if you size stakes correctly
- Use an arbitrage calculator to stake correctly
Arb vs +EV
| Arbitrage | +EV | |
|---|---|---|
| Goal | Secure profit | Win long-run expectation |
| Risk | Price can change while betting | Full outcome risk |
| Typical edge | Small (often 0.5–2%) | Bigger edge |
| Execution | Fast; both sides needed | One side only |
| Limits | Books dislike arbers; limits come fast | Limits still come, usually slower |
A +EV bet on one side is often half of what an arber would take. If you only bet the soft side and skip the hedge, you keep more EV in exchange for variance. If you take both sides, you trade most of that EV for a locked, smaller profit.
Neither approach is “wrong.” They optimize for different things: certainty vs long-run growth.
Where EVantage fits
Arb opportunities do show up in EVantage when two books are far apart — you may notice one side +EV at Book A and the other +EV at Book B. You can manually size an arb from those prices.
That said, dedicated arb tools with sub-second updates are better if arbing is your primary strategy. Odds move quickly; by the time both bets are placed, one side may be gone. EVantage is built primarily for +EV scanning, with filters, player data, and notifications aimed at one-sided value — not for high-frequency arb sniping.
Key takeaways
- Arbing locks small, low-risk profit; +EV bets one side and accepts variance.
- EVantage can surface arb-like disagreements, but it is optimized for +EV workflows.