Two bets at two sportsbooks that pay back more than you staked whichever side wins. Every NFL, NBA, NHL and MLB price refresh is scanned with the same rules, and editors can rescan current prices with one button.
Small edges, real taxes.
Most pairs return about 1% before tax. From 2026 only 90% of gambling losses are deductible, so a pair can lose money after federal tax. Set your bracket below. Why tax matters.
Settings
Locked now
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Rules on file, quotes together, pays either way
Check before betting
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Under 100%, but rules unknown or quotes apart
Closest misses
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Two-way pairs within 1% of a lock
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Scan nowEditors: rescan current prices
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Each scan spends paid Odds API credits through the same editor-only service as Live Odds. Prices are reused for 60 seconds, so pressing again sooner costs nothing, and scans pause when credits fall to the reserve kept for the scheduled refreshes.
Moneylines, spreads and totals for every game in the next 8 days: 3 credits.
Game lines and four player props for one game: up to 7 credits.
Locked now
Stake as shown and either side returns the same payout. Prices move fast: open both books, confirm the line and both prices, and place the price that stands out first.
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Check before betting
These add up to less than 100%, but something is unconfirmed: a book’s settlement rules for the market are not on file or differ, or the two quotes were taken more than five minutes apart. Treat them as leads.
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Closest to arbitrage
Best price on each side across books, between 100% and 101%. A negative return is the cost of holding both sides.
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Paper record
Every pair the scheduled scans have seen in the last 30 days, at the prices when first seen. These are saved quotes, not bets placed. “Seen twice or more” means it was still there at a later refresh.
Pick a Locked pair whose after-tax result is positive at your settings.
Open both sportsbooks. Confirm the same game, player, market and line, and that each price is the one shown or better.
Bet the price that stands out from the other books first; it is the one most likely to move. Then bet the other side.
Use the stakes shown for your total. If the second price has moved, decide before betting whether to take it, hedge elsewhere, or hold.
Press Track on each bet to record it in Bet Tracker with the price you actually got.
Limits, voids, obvious-error cancellations and account restrictions are not modeled. Offshore books are not licensed by any US state. Read the arbitrage plan for the rules we rely on and the month of history behind this page. This page is separate from Today’s Picks and Market Watch and does not feed either.
Fourth & Value provides sports analysis for informational and entertainment purposes. We do not accept wagers. You are responsible for your wagering decisions and for meeting applicable age and legal requirements. Never wager money you cannot afford to lose.