A bespoke equine biomech model for buyers who measure before they bid.
One standard behind every number: mature horses with complete race records, top-rated vs bottom-rated at the same price. No buy-cheap effect, no survivorship trick.
Top-rated yearlings returned 23% more prize money per dollar than bottom-rated — at the same price. Holds across both sexes and every vintage tested. Price- and survivorship-controlled.
Choosing between two foals of the same sire? Across 119 sires, our top-rated progeny returned 22% more per dollar — pedigree and price held constant. The one number that beats both "you just bought cheap" and "you just bought the right sire."
19.6% vs 14.2%. Top-rated yearlings are nearly half again as likely to still be racing deep into their careers — when the real money is paid. Soundness is the edge.
22.8% vs 18.3%. Dollar for dollar, top-rated yearlings pay back twice their purchase price a quarter more often than the bottom — the value the market leaves behind.
The value edge holds on both sides of the catalogue — +27% for fillies, +18% for colts. Not a fluke of one population.
The prize-money-per-dollar edge is positive in every yearling vintage tested. Not a single-year anomaly — a repeatable signal.
The signal is rare on purpose. Net +8 = top 2% / 1 in 49. Few horses clear it — and that's the point.
11.6% vs 9.2%. Top-rated yearlings come back a winner earlier — more likely to win in their two-year-old season, when first black type and early returns are on the line.
Every horse in the validation cohort, plotted on two of the biomech metrics that drive the score.
“Above $300k the model loses traction — the market is too inefficient at the prestige end. Below that ceiling — where 7 out of 10 bids land — our top-rated yearlings return 23% more prize money per dollar at the same price.”
Briefings for bloodstock managers, syndicators and trainers. Eight Furlong is private and bespoke — we don't publish picks.