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Value bets backed by sharp market data – find odds the market hasn't caught up to yet.
Positive expected value betting answers the question odds comparison cannot: not "who has the longest price", but "is this price actually good". Those are unrelated claims – the longest price on a bad bet is still a bad bet.
The method is to build a fair probability from a sharper reference than the book you are betting into, then flag every Australian price that implies something lower. We devig a blended baseline of Betfair Exchange post-commission and sharp international pricing, because the average of Australian corporate books is not a fair price – every one of them carries margin, so their average is systematically short.
It will not make any individual bet a winner. A 4% edge at even money still loses roughly half the time, and the category's real failure mode is psychological rather than technical – punters abandon a genuinely profitable process during an entirely normal drawdown. If you cannot sit through a 40-bet losing run without changing your staking, an arbitrage scanner is the better place to start.
Work an individual price with the free EV calculator or devig calculator. Pricing is at /pricing, and the same scanner is available as an endpoint on the Krok Odds API.
Fair odds, devigging, closing line value and account health.
A positive expected value bet is one where the bookmaker price implies a lower probability than the outcome actually has. If the fair price is $2.00 and a bookmaker is offering $2.10, that bet returns about 5% per dollar staked in the long run – even though it still loses roughly half the time. EV is a statement about the average of many bets, never about the next one.
We devig a blended sharp baseline – Betfair Exchange post-commission plus sharp international pricing – using the proportional method to recover a true probability for every outcome, then compare every Australian bookmaker price against it. Any AU price implying a lower probability than the baseline is positive EV, and is ranked by EV% and confidence. The full method is published at /methodology.
Because that compares the market to itself. Every Australian book carries margin, so the average of them is systematically shorter than true probability – it will tell you almost nothing is value, and occasionally tell you an outlier is value when it is simply an error. A fair price has to come from a sharper reference than the books you are betting into.
Longer than most punters expect. A 4% edge at even money wins about 52% of the time, so hundreds of bets can pass before the edge separates from noise, and losing months are a normal feature rather than a sign the process is broken. This is why closing line value matters – it converges far faster than profit and loss and tells you whether you are actually betting well.
Closing line value compares the price you took against the price the market settled at just before the event started. The closing line is the most accurate probability estimate a market ever produces, so beating it consistently is strong evidence of genuine edge rather than a hot run. Krok Odds settles CLV on every flagged bet and publishes the record at /track-record.
140+ Australian bookmaker brands plus Betfair Exchange – every major corporate (Sportsbet, TAB, Ladbrokes, Neds, Bet365, PointsBet, BlueBet, BetRight, Betr, Unibet, Palmerbet, TABtouch, Dabble, BoomBet) and the white-label brands riding the major aggregator platforms, across 181 sport and league keys.
Eventually, yes. Consistently taking prices that beat the close is exactly the signal Australian corporates use to identify winning accounts, and limiting is their standard response. Spread turnover across many books, avoid betting only the top price, and use Betfair Exchange – which does not limit winners – as the long-term home for sharp action.
They solve different problems. Arbitrage locks a small certain profit per bet but is capped by account limits and requires two funded accounts and fast execution. +EV has a higher ceiling and needs only one bet at a time, but pays out over a large sample and demands the discipline to keep betting through drawdowns. Most Australian punters should learn arbitrage first and add +EV once their bankroll and temperament can carry the variance.