How dobbing works
The mechanics, the maths and the honest limits of the numbers.
What Is Dobbing? The Double Or Bust Method Explained
Dobbing (Double Or Bust) means backing a horse before the off and laying it at half the price in-running. Here is how it works, the maths, and what Betfair's data says about how often it happens.
Read →Does Starting Price Change How Often Horses Hit Half?
How often UK and Irish runners traded at half their Betfair SP in-running, by starting price band. The answer is a U-shape, and the long end comes with a big caveat.
Read →Trends by month and price
Browse the data for this topic.
Open →Method & strategy FAQ
Quick answers on method & strategy.
Read →Dobbing by racecourse
Which tracks see the most in-running collapses, and why course is only part of the story.
Dobbing by race type
Handicaps, novices, chases, bumpers and the flat compared.
Data and tools
Reading Betfair's files yourself, and the software traders use.
Your trading tool here
This space is reserved for exchange trading software, data tools and courses. There are no sponsors yet, and any future listing will be clearly labelled as paid. Sponsors never change the numbers.
The Dobbing Report
Each week: which courses, race types and horses traded at half their BSP in-running, straight from Betfair's own files. Numbers, not tips.