New Posts For Thread: Think you know Rule 4? Then answer thishttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-thisA bet is placed on horse A at early prices. Later Horse B is withdrawn  requiring 10p Rule 4 applied to the bet on horse A. At the time of withdrawal horse C is 16-1. A new market is formed and horse C is now priced at 14-1. Later horse C is withdraFor the punter that ishttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564882065#564882065For the punter that isMon, 28 Jul 2025 09:25:17 -0500Eddie,please don't try to teach your grandmother to suck eggs.I was merely pointing out that Rule4 is infinitely better than the RF.https://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564882061#564882061Eddie,please don't try to teach your grandmother to suck eggs.I was merely pointing out that Rule4 is infinitely better than the RF.Mon, 28 Jul 2025 09:24:13 -0500Yes the bookmaker rule 4 vs exchange reduction factors are chalky and cheesy.Easiest way in traditional bookmaker world is to calculate the new price then treat the bet as the revised odds , so if the rule 4 is 25% you multiply the original price byhttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564882033#564882033Yes the bookmaker rule 4 vs exchange reduction factors are chalky and cheesy.Easiest way in traditional bookmaker world is to calculate the new price then treat the bet as the revised odds , so if the rule 4 is 25% you multiply the original price byMon, 28 Jul 2025 09:05:37 -0500uptheirons I knew I would get an irrelevant reply sooner or later. I think the following will be too sophisticated for you but try to follow. The correct mathematical way for dealing with withdrawals is to multiply the deductions, which is how Betfaihttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564882021#564882021uptheirons I knew I would get an irrelevant reply sooner or later. I think the following will be too sophisticated for you but try to follow. The correct mathematical way for dealing with withdrawals is to multiply the deductions, which is how BetfaiMon, 28 Jul 2025 08:53:26 -0500I can understand why bookmakers differ Eddie for reasons given , it's a case of some following Tattersalls vs some doing what they see as the fairest for both sides , expect plenty to disagree with my thinking of course as i'm in disagreement with thhttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564882019#564882019I can understand why bookmakers differ Eddie for reasons given , it's a case of some following Tattersalls vs some doing what they see as the fairest for both sides , expect plenty to disagree with my thinking of course as i'm in disagreement with thMon, 28 Jul 2025 08:52:27 -0500It is interesting that William Hill is a parent company of 888 Sport so why do they differ?https://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564881975#564881975It is interesting that William Hill is a parent company of 888 Sport so why do they differ?Mon, 28 Jul 2025 08:26:41 -0500I think that you should be happy that a Bookmaker will actually lay you a bet,Eddiehttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564881971#564881971I think that you should be happy that a Bookmaker will actually lay you a bet,EddieMon, 28 Jul 2025 08:25:38 -0500The fairest to me is the application at time of withdrawal and once the original market is reformed then each reformed market automatically becomes the " original " for that field of runners.I'll let you do the math Eddie but say the original horse whttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564881959#564881959The fairest to me is the application at time of withdrawal and once the original market is reformed then each reformed market automatically becomes the " original " for that field of runners.I'll let you do the math Eddie but say the original horse wMon, 28 Jul 2025 08:22:02 -0500Whallop, You are absolutely correct and I append the relevant paragraph from Tattersalls rules of betting which is available online. "In the case of withdrawals in reformed markets, the total deduction over the two or more horses (i.e. one in the orihttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564881943#564881943Whallop, You are absolutely correct and I append the relevant paragraph from Tattersalls rules of betting which is available online. "In the case of withdrawals in reformed markets, the total deduction over the two or more horses (i.e. one in the oriMon, 28 Jul 2025 08:18:47 -0500HILLS: Should a horse be withdrawn without coming under starters orders in an early price race, stakes on that selection will be returned, with bets on other runners in the race subject to a deduction in accordance with Tattersalls’ Rule 4, based ohttps://community.betfair.com/horse_racing/go/thread/view/94102/31880417/think-you-know-rule-4-then-answer-this?post_id=564881939#564881939HILLS: Should a horse be withdrawn without coming under starters orders in an early price race, stakes on that selection will be returned, with bets on other runners in the race subject to a deduction in accordance with Tattersalls’ Rule 4, based oMon, 28 Jul 2025 08:17:41 -0500