The Weight Next to the Name

In a handicap race, the racing secretary studies the field and assigns each horse a weight to carry, deliberately loading the best horses with the most — the idea being that if the weights are right, every horse crosses the wire together. The weight is the opinion, expressed in pounds. Our card borrows that language. For every starter we compute the weight it would carry in a handicap leveled by our own ratings, and we print that weight next to its name.

How we compute it

The raw material is the horse's own past performances — the same lines printed in the program. For each of its past races we take the speed figure it earned and measure it against the standard for that kind of race: the par for its class level, which we set at the figure the strongest quarter of horses at that level actually run (the 75th percentile, computed track-by-track where the data is deep enough). A race run exactly at that strong standard scores zero. Better than standard scores above it, race by race, in points.

Those race-by-race measures are then combined into one number per horse: recent races count more than old ones, the horse's better half of races counts extra, and the whole figure is discounted until a horse has shown its form more than once or twice — one big afternoon does not make a rating. Finally the number is turned into a weight on a fixed anchor:

So a horse at 124 lb has been running, on balance, about four pounds better than the standard of its company. A horse at 116 lb has been running about four pounds below it. On our current scale the highest-rated horse in North America carries 130 lb, and the median rated horse carries 117 lb. The scale is entirely ours — it is built from the figures in the past performances and our own pars, and no published rating (ours is not a Beyer, a Timeform, or a Longines number, and it will not match them) is an input to it.

Reading a field by its weights

• Top weight is our highest-rated horse in the race — on performance against the standard of its own races, which is not the same thing as the fastest horse or the classiest name.
• The spread is the story. If the field runs from 126 lb down to 124 lb, our numbers see a near-level race. If it runs from 127 lb down to 108 lb, one part of the field has been performing far above the standard of the other part's races.
• A pound or two is a tie. Two horses within a pound of each other are, on this scale, effectively level — which is exactly how the weight is allowed to be used in our selections, below.

What it is not

It is not the weight the horse carries today. Today's actual impost is set by the conditions of the race and printed in the program. Ours is a hypothetical handicap weight, a measuring stick — the two numbers will sometimes be close and often will not.

It is not a pick, and it does not rank our selections. Our picks are made by a published protocol anchored on the morning line. The weight's role inside that protocol is deliberately small and defined: it settles contests that the rest of the analysis leaves effectively tied, and a clear weight advantage (four pounds or more) counts as one named signal among several when a challenger argues against an incumbent pick. It never orders a field by itself. We hold it to that limited role because we tested the larger one: asked to rank on its own, the rating put the winner in its top three about 65% of the time on held-out cards, against about 75% for plain morning-line order. A measurement can be honest and useful without being a better oracle than the market — and we would rather publish the test than oversell the tool.

It is not borrowed. Other scales exist — officials and publications rate horses their own way, on their own anchors. A 124 on our scale and a 124 on another are different statements, because the average horse underneath each anchor is different. Weights are only ever comparable inside the one scale that produced them.

The same idea, across 33 years

The weight on the daily card is built from past-performance lines. We also maintain a second, chart-based scale built the other way — from official race charts and beaten lengths, solved as one connected web of shared opponents. Its proving ground was the Breeders' Cup Classic: all 34 runnings from 1989 to 2022, plus the 2021 Whitney, solved as a single web of 323 horses. Inside that web — where the 120 lb anchor is an average Classic starter, a far richer horse than the daily web's average — Cigar rates top of the multi-time winners at 126 lb, Flightline carries 123 lb, and Sunday Silence 122 lb, about a third of a length between the two of them across 33 years. The full story, including how the 1989 chart was recovered after the official archive proved to start in 1991, is told in the podcast episode "One Scale for Every Horse."

That is the whole idea, both scales of it: one number, in the sport's oldest unit, computed from evidence we hold and can show — printed next to the name, with its limits stated in the same place.