Guide · 6 min read
Live arbitrage betting: why in-play arbs fail more often than pre-match ones
Live (in-play) sure bets exist: during a match, bookmakers sometimes disagree for a few seconds by enough for the sum of 1/odds to drop below 1. Getting both bets accepted at those prices is the hard part. This guide explains bet delays, suspended markets and why we only scan pre-match.
Updated 22 October 2026
Contents
Pre-match versus live: the comparison
Pre-match means you bet before kick-off. Live, or in-play, means you bet while the match is running. For sure bets that makes a big difference.
| Feature | Pre-match | Live |
|---|---|---|
| How long a sure bet lasts | often minutes, sometimes longer | often only seconds |
| Delay before the bet is accepted | usually none | a few seconds is normal |
| Suspended markets | rare | frequent, e.g. at chances, penalties or break points |
| Rejected bets | rare | frequent, when the price moves during the delay |
| Risk of an open side | lower | much higher |
| Time to check rules and lines | enough | hardly any |
The formula is the same live as before the match. Execution is the problem: a sure bet only works if every bet is accepted at the odds you calculated with.
Bet delays and suspended markets
In-play, bookmakers don't accept a bet instantly. They hold it for a few seconds and then check whether anything has changed in the meantime. This protects them from bets by people who see the action faster than they do, for example in the stadium or on a quicker stream.
- Delay. Each bookmaker sets its own delay, depending on the sport and the market. A few seconds is common.
- Suspension. In dangerous situations the market is briefly suspended and you can't bet at all.
- Price change during acceptance. If the price moved during the delay, the bet is rejected or, if you allowed it, accepted at the new price.
Many bookmakers have a setting such as "accept odds changes": never, only higher odds, or all. For sure bets "all" is dangerous, because a lower price can break the calculation without you noticing before the bet is accepted.
Germany also restricts by law what you can bet on in-play: the 2021 State Treaty on Gambling (GlüStV) only allows in-play bets on the final result and on the next goal, next set or a similar section of the match. In Austria, sports betting is regulated by the federal states, and in-play betting is common at the big bookmakers there.
Why live sure bets fail more often
A live sure bet usually exists because one bookmaker reacts more slowly to the match than another. That same bookmaker is the one about to correct it, often while your bet is still sitting in the delay.
Live tennis: 2.30 on Player A at Bookmaker 1, 1.85 on Player B at Bookmaker 2. S = 0.43478 + 0.54054 = 0.97532, about a 2.5% return.
You stake €400 on A, accepted at 2.30, potential payout €920. For an equal payout you would need €497.30 on B, which would be +€22.70 whatever the result.
The bet on B is rejected after the delay, and the new price is 1.70. For the same payout you now need €541.18 on B. Total stake €941.18, payout €920: −€21.18 whatever the result. Or you leave A open and carry an uncovered bet.
On top of that, after a goal, a break of serve or a red card, every price jumps at once. What was a sure bet a moment ago is, a second later, two bets at completely different prices. What to do when one side is missing is covered in arbitrage betting risks.
When live still makes sense
In-play markets aren't useless. There are situations where they help:
- Closing an open side. If only one bet of a pre-match sure bet went through, a live covering bet can limit the damage if the price moves your way. Recalculate before you bet.
- Slower markets. Markets that don't move with every rally, such as full-match over/under lines, are a little more stable than the match winner.
- Experience and speed. If you have both bookmaker apps open side by side with the stakes ready, there is a better chance both bets go through. The risk remains.
To get started, pre-match is the better choice: you have time to check rules and lines, and a rejected bet is rare. How to find pre-match sure bets is explained in how to find arbitrage bets.
What ArbVantage covers
ArbVantage only scans pre-match sure bets. As soon as a match has started it disappears from the list, because the pre-match prices no longer apply. The app also hides combinations whose oldest price is too old; the closer the kick-off, the stricter the limit.
We deliberately don't offer live sure bets. With the delays and frequent rejections, the risk of an open side would be too high for most users. If you'd like to try pre-match sure bets, you can try ArbVantage free for 14 days.
Frequently asked questions
Do live sure bets really exist?
Yes. During a match, bookmakers sometimes disagree for a few seconds by enough for the sum of 1/odds to drop below 1. Because of the bet delay, though, both bets often don't go through at those prices.
How long does acceptance take?
Each bookmaker sets this itself, depending on the sport and the market. A few seconds is common. If the price changes in that time, the bet is rejected or accepted at the new price, depending on your setting.
Is live riskier?
Yes. Markets are suspended more often, bets are rejected more often and prices jump after goals or breaks. That raises the risk that only one side is accepted and you are left with an uncovered bet.
Why does ArbVantage filter out matches that have started?
Because pre-match prices stop applying at kick-off. A sure bet built from pre-match prices could no longer be placed on a running match, or would have different prices.
Sources
- Glücksspielstaatsvertrag 2021, § 21 Sportwetten (in-play bets, para. 4) (in German)
- RIS: Wiener Wettengesetz (Vienna Betting Act) (in German)
- Land Salzburg: sports betting (in German)
As of October 2026. Bookmakers' rules, odds and offers change; their current terms and betting rules always apply.
Betting involves risk, even with sure bets: prices move, bets get voided, accounts get limited. Only use money you can do without. Our responsible gambling page lists free help in Austria and Germany.
Information, not betting, legal or tax advice. 18+.