Introduction
Percentage Rivals Beaten (PRB) is the share of rivals a horse, jockey or trainer finishes in front of. Higher is better.
- Winning scores 100% for that race.
- Finishing last scores 0%.
- Finishing in the middle of a 9-runner race scores about 50%.
How it is calculated
Per run
| Part | Calculation |
|---|---|
| Rivals beaten | Runners minus finishing position. 4th of 10 beat 6. |
| Rivals faced | Runners minus 1. In a 10-runner race, 9. |
| Did not finish | Beat 0, but still faced every rival. |
Rolling figure
PRB = total rivals beaten / total rivals faced x 100
Example:
| Run | Beaten | Faced | That run alone |
|---|---|---|---|
| Won, 10 runners | 9 | 9 | 100% |
| 4th of 6 | 2 | 5 | 40% |
| Fell, 16 runners | 0 | 15 | 0% |
| PRB = 11 / 29 x 100 | 38 |
A simple average of the three runs would be 47. PRB comes out at 38 because the 16-runner race, where the horse fell, involved the most rivals.
Reading it
- Big fields count for more. Beating 15 rivals in a big handicap moves PRB much more than winning a 3-runner race, because it counts the rivals actually beaten.
- Non-finishers count fully against. A fall or pull-up adds every rival to the faced total and none to beaten.
- PRB rewards consistency. An entity that finishes in the first few every time can have a higher PRB than one that wins occasionally but is often well beaten.
- Best, worst, trend, normalised scores and race rankings work as described in the statistics overview.