The OddsFetcher sure bets finder (also called a surebets finder or arbitrage bet finder) is a free, real-time tool that scans odds across 9 major sportsbooks every 5 minutes. Whenever the combined implied probability on all outcomes of an event drops below 100%, the opportunity appears in the feed — guaranteed profit, no prediction required.
Open the live arbitrage scanner for the real-time feed, or read on to learn how to spot, size and place sure bets.
A sure bet (also called an arbitrage, an arb, or a surebet) is a combination of bets on every possible outcome of an event, priced such that you lock in a profit no matter which outcome wins. The condition is simple:
Combined implied probability = (1 / Odds₁) + (1 / Odds₂) + ... < 1.00
If that combined value is below 100% (it usually is on some markets at any given moment thanks to pricing disagreements between sportsbooks), the difference is your guaranteed profit margin.
For two-outcome markets like NBA moneyline or NFL spreads, the formula reduces to (1/odds₁ + 1/odds₂). For soccer 1X2, three terms. The arbitrage calculation is the same in all cases — see the arbitrage calculator for a free tool that does the math.
The OddsFetcher arbitrage finder runs continuously. Every 5 minutes it pulls fresh odds from each bookmaker in our coverage universe, recomputes combined implied probability for every event for which we have at least two books, and surfaces anything that crosses the arbitrage threshold to the top of the feed.
Click into any opportunity to see the full legs table (which book is offering which outcome at what price) and a stake calculator. Pick a total stake, copy the per-leg stakes, and place the bets at the two books. Returns equal out regardless of the result.
We pull live odds from 9 bookmakers every 5 minutes and recompute the combined implied probability across every market. When the sum across all outcomes drops below 100%, an arbitrage appears in the feed within seconds.
Two-outcome markets (NBA, NHL, NFL, tennis, MLB) produce arbs most often. Soccer 1X2 markets produce three-outcome arbs less frequently but at higher margins (often 1–4%). Filter the feed to focus on what you know.
Each opportunity shows the exact stake to place on every leg for a chosen total stake, so you don't have to do the math yourself. Open the card, pick your total, copy the per-leg stakes, and you're done.
Opportunities are sorted by guaranteed profit % from highest to lowest. Anything over 5% is hot — over 10% is rare and short-lived. Move fast when you see those.
DraftKings, FanDuel, BetMGM, Bet365, Pinnacle, Caesars, BetRivers, Bovada and BetOnline.ag — the books most bettors already have accounts with. No aggregator scraping weird small books.
The live feed is free. Click into the live scanner from the homepage, scan the list, and place your bets. No credit card. No premium upsell in front of the data.
Some sports produce sure bets more often than others. Here's what to expect when you filter the OddsFetcher finder by sport:
| Sport | Market type | Outcomes | Typical arb range |
|---|---|---|---|
| NBA / NCAAB | Moneyline, spreads, totals | 2 | 1–3% |
| NFL | Moneyline, spreads, totals | 2 | 1–4% |
| Soccer (EPL, La Liga, Champions League) | 1X2, Asian handicaps, totals | 3 (1X2) | 1–4% (occasionally 5%+) |
| Tennis (ATP, WTA) | Match winner, set betting | 2 | 1–5% |
| NHL | Puck line, moneyline, totals | 2 | 1–3% |
| MLB | Run line, moneyline, totals | 2 | 1–3% |
Want to drill into one sport? Open the dedicated scanner for EPL, NBA, NHL, or browse all supported sports.
Sportsbooks build odds independently using proprietary models and risk teams. They update those odds at different speeds as new information arrives (injury news, sharp action, weather). The disagreements in price that result are the sure bets a finder surfaces:
A sure bet finder surfaces mathematically profitable opportunities, but executing on them is not free of friction:
Open the OddsFetcher live arbitrage scanner to see every active opportunity across 9 sportsbooks — ranked by profit, refreshed every 5 minutes, free to use with no sign-up.
Need to verify a stake? Use the free arbitrage calculator. Want to learn the math in depth? Read the surebet calculator guide or the broader arbitrage betting guide.
Curious which books give the sharpest prices? See the best odds bookmakers ranking and the full bookmaker comparison.