How to use the Arbitrage tool

Read Profit %, set your stakes in the calculator, open both books in one press, and know what to do if one bet fails.

Unjuiced Team · Last updated November 5, 2026

Arbitrage looks for two opposing prices at different books that pay out whichever side wins. The profit only holds if both bets are accepted at those prices and settle the same way.

Read the table

Each row is one arb:

  • Profit %: the profit as a share of the total you stake across both bets. It used to be called ROI %.
  • Play: the game and market. The start time is on the line under it.
  • Bets: the two sides, each with its book and price. A 1 beside a side means bet that one first: its price is the one most likely to move.
  • On $200: what the arb returns on your total stake if both bets stand. Press the header to change the total or how stakes round.

Sort by Profit % or Game time. The Filters sheet sets your books, markets and bet sizing.

Work through one row

  1. Press the row. The side panel opens with the calculator on top.
  2. Check both sides: the same game, the same period and the same line.
  3. Set the total stake. Pick a preset or type your own, and choose how each stake rounds.
  4. Read the result. Profit either way means both outcomes pay. If rounding breaks that, each outcome is shown on its own.
  5. Under the calculator, the odds list shows every book on both sides. On a price, Use in calculator swaps that book into the bet.
  6. Press Open both. Both books open at once, each with the bet in its slip where the book supports it. If only one opens, your browser blocked the second: see Open both books at once.
  7. Track each bet from the panel so My bets follows the result.

If you type the price you actually got, the calculator redoes the split. Reset to live prices puts the current prices back.

Open both books at once

Open both opens the two books from one press. In the Filters sheet, under Bet sizing, Open both in sets where they go:

  • Side by side: two windows, on the left and right halves of your screen.
  • Corners: two small windows, in the bottom-left and bottom-right, so the arb table stays visible between them.
  • New tabs: two tabs in this window.

Browsers let one click open one window. To get the second, allow pop-ups for Unjuiced once:

  1. Press Open both. The first book opens.
  2. In the address bar, click the blocked pop-up icon at the right end.
  3. Choose Always allow pop-ups from Unjuiced, then Done.
  4. Close the book that opened and press Open both again. Both books open.

Until you allow pop-ups, the side panel shows a one-tap button to open the second book. On a phone, each press opens one book, and the second is its next step.

Books like FanDuel, DraftKings and theScore open with the bet in the slip. Others, like bet365, open on the market, so find the line there.

What the numbers mean

  • Profit %: net profit divided by the total stake.
  • Total stake: money across both bets, not each bet.
  • Stake split: how the total is divided so both outcomes pay about the same.
  • Payout: stake plus winnings on the winning bet.
  • Net profit: what comes back minus what you staked.

Finding a pair is not the same as your books accepting it. Unjuiced does not place bets.

Worked example

Over 44.5 is +110 at one book and Under 44.5 is +110 at another. $50 on each side is $100 in total. The winning side returns $105, so the pair makes $5, a 5% Profit %.

At unequal prices, equal stakes won't balance. Let the calculator split the stake, or use the Arbitrage and Hedge calculator. Rounding a stake, or getting less accepted on one side, changes the result.

Check the market rules

Check the event, period, side, line, overtime and void rules at both books. A full-game total and a regulation-only total don't always settle together. Whole-number lines can push.

If a price moves or one bet fails

A pair can stop being an arb before both bets are placed. If you placed neither, check the prices again. If you placed only one, you hold an open bet until you cover it.

Look at the real open stake and the prices available now. Don't assume the other side is still good value, or that one more bet fixes it. The calculator can show what a different hedge pays before you act.

A voided or partly accepted bet changes the result too. Your actual tickets are the record.

Troubleshooting

  • A book doesn't show the market: it may be suspended, not offered in your region, or moved off that line.
  • Profit % changed after editing stakes: the outcomes no longer pay the same, or rounding changed them.
  • The pair disappeared: one price moved enough to close the gap.
  • No rows: your filters may be narrow, or there are no arbs right now.
  • Open both opens only one book: your browser blocked the second window. Allow pop-ups for Unjuiced from the address bar (steps).

When asking for help, include both lines, prices, books and what the calculator showed. Hide balances and ticket details in public channels.

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