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What is sports arbitrage?

A sports arbitrage situation occurs when bookmakers' prices differ enough that we can back all possible outcomes of an event and guarantee a risk-free profit no matter what the outcome.

Sports arbitrage betting opportunities are often referred to as an "arb", "surebet", "underround" or "overbroke".


Don't bookmakers know about sports arbitrage?

Yes they do!

Bookmakers don't create arbitrage opportunities with their own prices. If this does ever happen it's because of a mistake. You can't go to one bookmaker and bet on all outcomes without losing money.


How do you profit from sports arbitrage?

You must use at least two different bookmakers. Betting on all outcomes at the same bookmaker won't work. You have to find at least two bookmakers whose prices differ and are high enough on opposing outcomes so that an arb is created.

This was previously quite a challenge, in the days when betting shops and telephone betting were the only options. But with the number of bookmakers offering online betting growing all the time, we now have vastly more odds to compare than before.


Arbitrage betting example...

Imagine a fictional tennis match. "Bookmaker A" gives Andy Murray odds of 2.00 (1/1 in fractional odds format) and Roger Federer odds of 1.91 (10/11 in fractional). You couldn't make a profit by betting on both players at "Bookmaker A".

Let's say you then visit "Bookmaker B" and they're offering Andy Murray odds of 2.40 (7/5 in fractional) and Roger Federer odds of 1.66 (4/6 in fractional) . Again you couldn't bet on both players at "Bookmaker B" and make a profit.

However on a total investment of 100, if you placed 42 on Andy Murray at "Bookmaker B" at odds of 2.40 (7/5 in fractional) and also 58 on Roger Federer at "Bookmaker A" at odds of 1.91 (10/11 in fractional) you would be guaranteed a profit of over 6% of your total stake no matter which player won.

Learn more with our in-depth sports arbitrage example.

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Members Say

"Initially I was quite sceptical when I heard about sports arbitrage - I thought that it sounded too good to be true and there must be a catch or a gamble somewhere!

Thank you Arb Hunters for being honest and taking the time to explain arbitrage betting to me. I've now purchased an arb alerts subscription and made my first risk free profit!"

Miss L, Dublin