In it’s simplest form, a Rule 4 Deduction is applied when there is a non-runner in a race that has withdrawn from the race after the final declarations have been made and before the market can be reformed.
If a horse is withdrawn before coming under Starters Orders, bets will be settled using the Rule 4 Deduction scale. The scale adjusts prices to reflect the absence from the book of any non-runner.
Deductions are made per pound won and relate to the price of the withdrawn horse at the time the bet was placed. In all cases Rule 4 deductions will be up to a maximum of 90p per pound won.
If two or more horses are withdrawn before coming under Starter's Orders, then the total deduction will be the total sum of the individual deductions.
Below is a table of the Rule 4 Deductions that would be applied depending on the price of the non-runner:
|Price of non-runner when bet placed||Decimals||R4 Deduction|
|1/9 or shorter||1.11 or shorter||90p|
|2/11 to 2/17||1.18 to 1.12||85p|
|1/4 to 1/5||1.25 to 1.20||80p|
|3/10 to 2/7||1.30 to 1.29||75p|
|2/5 to 1/3||1.40 to 1.33||70p|
|8/15 to 4/9||1.53 to 1.45||65p|
|8/13 to 4/7||1.62 to 1.57||60p|
|4/5 to 4/6||1.80 to 1.66||55p|
|20/21 to 5/6||1.95 to 1.83||50p|
|Evens to 6/5||2.00 to 2.20||45p|
|5/4 to 6/4||2.25 to 2.50||40p|
|8/5 to 7/4||2.60 to 2.75||35p|
|9/5 to 9/4||2.80 to 3.25||30p|
|12/5 to 3/1||3.40 to 4.00||25p|
|16/5 to 4/1||4.20 to 5.00||20p|
|9/2 to 11/2||5.50 to 6.50||15p|
|6/1 to 9/1||7.00 to 10.00||10p|
|10/1 to 14/1||11.00 to 15.00||5p|
|Over 14/1||Over 15.00||No deduction|
It is important to note that Tattersall’s Rule 4 Deductions are an industry standard, we are not unique in applying this rule.