Staking across multiple selections in an event so that any one winning gives the same profit — spreading risk without requiring all to win.
Dutching involves placing proportional stakes on multiple selections in the same event so that whichever one wins, you receive the same net profit. Unlike an accumulator (all must win) or an arbitrage (guaranteed profit), dutching requires at least one of your selections to win and produces the same return regardless of which one does.
The stake on each selection is inversely proportional to its odds: shorter-priced selections receive a larger stake, longer-priced selections a smaller stake. The total staked is divided according to the implied probability of each selection.
Dutching is most useful when you have identified a subset of the field as value selections but cannot determine which specific one will win. In a six-runner race, if you believe three runners are underpriced and the other three are overpriced, dutching the three value selections locks in a profit if any of them wins.
The key requirement: the combined implied probability of your dutched selections must be less than 100% for the strategy to be profitable. If you dutch three selections with combined implied probability of 80%, you have an effective 20% edge — earning a profit of roughly 20/80 = 25% on the stakes if any wins.
Implied Probability
The probability of an outcome embedded in bookmaker odds — calculated by dividing 1 by the decimal odds.
Value Betting
Betting at odds that are higher than the true probability of the outcome — finding bets where the bookmaker has underestimated the chances of an event.
Overround (Vig / Juice)
The bookmaker's built-in profit margin — the amount by which the implied probabilities of all outcomes in a market sum to more than 100%.
Expected Value (EV)
The average outcome of a bet over a large number of repetitions — positive EV means the bet profits long-term; negative EV means it loses.
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