New Posts For Thread: 5.30 Rule 4https://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4How does a 25% Rule 4 shave 2.36 down to 1.70? Thats 48%. 25% should have taken that to 2.02You think thats bad, I placed a bet yesterday with required odds of 1.72. There was a withdrawel with a reduction of 53.3%, my bet now became 1.01. So I have a 50 euro bet to win which gives me 50cent profit if it wins. I asked Betfair about this shttps://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565366331#565366331You think thats bad, I placed a bet yesterday with required odds of 1.72. There was a withdrawel with a reduction of 53.3%, my bet now became 1.01. So I have a 50 euro bet to win which gives me 50cent profit if it wins. I asked Betfair about this sTue, 12 May 2026 08:18:31 -0500Anybody got a disgorgerhttps://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311399#565311399Anybody got a disgorgerWed, 08 Apr 2026 12:43:57 -0500unhook me please.https://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311391#565311391unhook me please.Wed, 08 Apr 2026 12:41:12 -0500got to be a fishing thread - 22 years on betfair and he doesn't understand that the exchange doesn't operate rule 4 but implements a reduction factorhttps://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311387#565311387got to be a fishing thread - 22 years on betfair and he doesn't understand that the exchange doesn't operate rule 4 but implements a reduction factorWed, 08 Apr 2026 12:40:26 -0500Tattersalls Rule 4 is for bookmakers.Betfair betting exchange is not a bookmaker and uses its own Reduction Factor.https://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311383#565311383Tattersalls Rule 4 is for bookmakers.Betfair betting exchange is not a bookmaker and uses its own Reduction Factor.Wed, 08 Apr 2026 12:38:22 -0500What is Rule 4?Rule 4 covers the situation where a horse is withdrawn from a race, the odds for all bets placed on remaining horses are adjusted to account for the non-runner(s). This is because less horses in a race increases the probability of eachhttps://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311377#565311377What is Rule 4?Rule 4 covers the situation where a horse is withdrawn from a race, the odds for all bets placed on remaining horses are adjusted to account for the non-runner(s). This is because less horses in a race increases the probability of eachWed, 08 Apr 2026 12:35:33 -0500It was introduced to encourage Layers to the Exchangehttps://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311369#565311369It was introduced to encourage Layers to the ExchangeWed, 08 Apr 2026 12:31:30 -0500Taking that logic further, if a long odds on favourite is withdrawn and there is an 75% R4 you could get less than your stake back. r4 should not include the stake. I will have a look at BFs R4 ruleshttps://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311351#565311351Taking that logic further, if a long odds on favourite is withdrawn and there is an 75% R4 you could get less than your stake back. r4 should not include the stake. I will have a look at BFs R4 rulesWed, 08 Apr 2026 12:25:42 -0500The BF RF does include the stake,JRAShttps://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311343#565311343The BF RF does include the stake,JRASWed, 08 Apr 2026 12:20:33 -0500Not quite Dave1357. Thats including the stake. To apply a 25% deduction the correct calculation is 1.36 x 0.75 = 1.02https://community.betfair.com/horse_racing/go/thread/view/94102/31899119/530-rule-4?post_id=565311339#565311339Not quite Dave1357. Thats including the stake. To apply a 25% deduction the correct calculation is 1.36 x 0.75 = 1.02Wed, 08 Apr 2026 12:18:10 -0500