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Latest post 07-09-2008 4:00 PM by reverend. 6 replies.
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Anonymous  +  164 Thu, 12 Jun 08 10:41 PM
Hi everyone, I really like this site.

Can anyone explain how the horseracing rule 4 system works. I read about it on the internet but didn't quite understand it.

Thanks in advanced,

Ivan
cyborg  +  207 Tue, 17 Jun 08 02:47 AM
Hi Ivan

The way i understand it is that if there are less horses racing then the odd of any horse still in the race change. thus the chance of you placing a winning bet are even greater, so bookmakers re work the odds accordingly.

Here is what the rule says.... see what u make of it.

After a bookmaker has created a book of prices for a horse race, there is every possibility that a horse may be withdrawn (become a non runner) before the race starts. This can happen for many reasons, for example: the ground / going has changed dramatically and it no longer suits a particular horse or simply that a horse has become unwell. As the bookmakers made up the original book based on all the horses taking part, the prices will now be incorrect.

Bookmakers are allowed to make adjustments to prices and this is called a 'Rule 4 Deduction' or R4 for short. Deductions are based on a certain amount of pence in the pound, E.g. 20 pence in the pound and it is the original price of the withdrawn horse which determines the amount of deduction. Rule 4 deductions are applied to both win bets and each way / place bets. It is only your winnings that are affected by the rule 4 deduction and not your original stake. If more than 1 horse is withdrawn, total deductions shall not exceed 75p in the pound.

Rule 4 Deductions

Odds of withdrawn horse
Deduction (pence in pound)
% of winnings
3/10 or shorter  
75p in £
75
Over 3/10 Up to and including 2/5
70p in £
70
Over 2/5 Up to and including 8/15
65p in £
65
Over 8/15 Up to and including 8/13
60p in £
60
Over 8/13 Up to and including 4/5
55p in £
55
Over 4/5 Up to and including 20/21
50p in £
50
Over 20/21 Up to and including 6/5
45p in £
45
Over 6/5 Up to and including 6/4
40p in £
40
Over 6/4 Up to and including 7/4
35p in £
35
Over 7/4 Up to and including 9/4
30p in £
30
Over 9/4 Up to and including 3/1
25p in £
25
Over 3/1 Up to and including 4/1
20p in £
20
Over 4/1 Up to and including 11/2
15p in £
15
Over 11/2 Up to and including 9/1
10p in £
10
Over 9/1 Up to and including 14/1
5p in £
5
Over 14/1  
No deduction made
 


If there is enough time before the start of the horse race for bookmakers to create a new book, they will do so. In these cases the Rule 4 deductions will only apply to people who placed bets on horses at the original book prices.

Joined on 05-10-2008
97
lfcforever, 1 yr 271 days ago
Yep, cyborg is right... are you a UK horse racing fan?
cyborg  +  227 Wed, 18 Jun 08 07:26 AM
Not really, but i have some friends that are into French horse racing and also own a number of horses  that compete in France.

chris  +  258 Thu, 19 Jun 08 06:37 PM
Yeats just won the Gold Cup at Royal Ascot for the third consecutive time today. What a horse!
Joined on 05-05-2008
84
shane1  +  382 Wed, 09 Jul 08 02:18 PM
I was thinking that there must be a way of 'playing' the rule 4 system. Most companies wave 5p deductons. If you know that a horse is going to pull out how about backing a couple just before the horse is taken out. Obviously after the horse is taken out a few will shorten slightly. Then you lay off if your selection/s have shortened?

What do you think?
Joined on 06-12-2008
48
reverend, 1 yr 249 days ago
exchanges will also make adjustments on bets when a r4 is applied
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