Arbitrage pairs an Over price and an Under price for the same player, event, stat, and line. The calculator balances wagers so the two winning payouts are approximately equal at the prices shown.
Illustrative demo data: each row pairs both directions of the same line.
Find and size an opportunity
- Open Arbitrage from the sidebar.
- Use Books to choose the eligible books, then narrow results with Search, Sport, and Market.
- Set Min LIQ for minimum reported available size.
- Read the two Best prices legs. Confirm the same player, stat, event and line, with one Over and one Under.
- Edit the dollar amount in either leg’s Wager field. The other amount updates automatically to balance the two payouts.
- Read the resulting Profit and ROI, then compare each wager with the available liquidity.
Illustrative demo data: edit either side; the other stake and calculated Profit update together.
What Profit and ROI mean
Profit is the lower calculated net profit across the two winning outcomes, using the shown prices and both stakes. ROI is that profit divided by the combined stake. The calculator uses cents and rounds the minimum payout conservatively.
For example, +105 Over and +110 Under can be balanced at about $50.60 and $49.40 for a $100 total stake and a calculated minimum profit of $3.73. This is a price-based illustration, not a promise that both wagers will be accepted.
Check liquidity capacity
If either side has a reported size limit, the maximum combined stake depends on the allocation across both legs. Exceeding it shows Maximum available stake. A minimum liquidity filter is not a guarantee that any chosen stake will fit.
Illustrative demo data: the requested stakes exceed a reported available-size limit.
Open both legs and verify the terms
Use each enabled book/side action to open its supplied destination. Confirm both current prices, lines, settlement rules, fees, and accepted sizes. Opening a link does not submit a wager. A missing or expired link can be unavailable.
Live-market example: each side opens its supplied research link when actionable.
The calculation assumes matching settlement rules and successful execution at both prices. Odds can move or a leg may not be accepted. For an integer line, a matching push returns both stakes for zero profit. Describe this as calculated arbitrage profit at the shown prices rather than unconditional risk-free profit.