Rules:
- Operate on any race with 7 to 12 runners
- To be a contender a horse must have won or run a place in at least three of its last 6 runs
- To remain a contender it must have won at least once in its last three starts
- It must have won within 100 metres of today’s distance
- Eliminate any contender beaten by more than 6 lengths at its last start unless that race’s prize money was double or more than today’s race
- If more than one remains back them all if prices allow