Rule 4 Deductions Explained
Rule 4 is a deduction applied to winnings when a runner withdraws from a race after you bet. This guide explains it with hypothetical examples only.
- It is a deduction from winnings applied when a runner withdraws from a race after you bet, reflecting that the remaining runners' chances improved.
- It depends on the withdrawn runner's odds — the shorter its price, the larger the deduction.
- It applies to bets placed before the withdrawal at the affected price.
Why Rule 4 exists
If a horse or dog is withdrawn, the remaining runners' chances improve, so prices should have been shorter. Rule 4 adjusts winnings to reflect that.
How it is sized
The deduction depends on the withdrawn runner's odds: the shorter its price (the more likely it was), the bigger the deduction.
When it applies
Rule 4 applies to bets placed before the withdrawal at the affected price. Bets taken after the market reforms are unaffected.
In practice
It is most common in horse racing and greyhound racing. The deduction is shown when your bet settles — read the rules.
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🔞 18+ only. Examples are hypothetical and for explanation only — they are not betting advice or real odds. Please gamble responsibly.
FAQ
It is a deduction from winnings applied when a runner withdraws from a race after you bet, reflecting that the remaining runners' chances improved.
It depends on the withdrawn runner's odds — the shorter its price, the larger the deduction. An outsider's withdrawal causes little or none.
It applies to bets placed before the withdrawal at the affected price. Bets taken after the market reforms are unaffected.
Last updated: 2026-06-15