DoubleOrBust is run by racing fans who spend too much time watching prices move in-running. We wanted a straight answer to a simple question: how often does a horse actually trade at half its starting price during a race? The data to answer it is published free by Betfair every day, but nobody was keeping a public, up-to-date tally. So we built one.
What we do
- Download Betfair's UK and Irish BSP files every day.
- Flag every runner whose in-play low reached half its BSP or lower.
- Publish the totals by course, race type, distance, month and horse, with a link to the source file for every runner.
What we don't do
- We don't give tips, and nothing on this site is a prediction.
- We don't say dobbing or any approach is profitable.
- We don't take bets, and we aren't affiliated with Betfair.
How the site is funded
The tracker is free. In future we may carry clearly labelled sponsored listings for trading software and data tools in a “Featured tools” slot. Sponsors won't change any numbers. If you make a tool that traders use, see Advertise with us.
Contact
Questions, corrections or ideas: email hello@doubleorbust.com.
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.