Updated
Handicap weights are calculated from each horse's Official Rating (OR), a pound-for-pound figure assigned by the BHA handicappers. The top-rated horse in a race carries the maximum weight allowed by the conditions (typically 10st 0lb on the flat, 11st 12lb in jumps handicaps); every other horse carries less, scaled by the gap between their OR and the top-rated. One OR point typically equals one pound of weight. The system is designed to give every horse an equal chance on paper — sharpening the punting puzzle to whether a horse is improving, declining or unchanged since its rating was last set.
The BHA's team of handicappers. Each handicapper covers a sector (e.g. 2yo flat, 3yo flat, older stayers, novice hurdlers, novice chasers, etc.) and reviews every settled run in that sector, adjusting ratings up or down based on the time, beaten distances, and class of the race. Ratings are republished weekly on Tuesdays.
A horse running off an Official Rating that's significantly below its actual ability. Causes: it's improving faster than the handicapper has reassessed; or it has shown its true ability only once (e.g. an eyecatching run from off the pace in a strong race); or connections have deliberately campaigned it to win a small race. Spotting well-handicapped horses is the classic puzzle that decent punters live and die by.
If a horse wins after the handicapper has set weights for the day's race but before reassessment day (the following Tuesday), the BHA imposes a penalty — extra weight to reflect the now-out-of-date OR. Penalties are usually 5lb or 7lb. A horse running with a penalty is a horse the market knows is in form right now.
Yes — OR is one of four ratings on every horse profile (alongside RPR, TS, and our AI score) and is a major input into the AI's selection model. A horse running well below its OR (recent form below its rating) is flagged as worth a closer look; conversely, a horse rated above its recent form is flagged as potentially over-priced.
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