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2026 pre-sale research

Keeneland September
Yearling Sale

Explore all 4,642 hips with pedigree, family evidence and preliminary commercial research.

Explore catalog
Full-service breeding operation

We don’t just analyze great horses. We breed them.

Hard Six breeds its own performance horses and helps clients produce theirs. Our integrated program combines data-guided mating decisions, full DNA and genome analysis, in-house OPU, IVF and ICSI, and our own recipient-mare herd. We also offer select embryos, breedings and in-foal mares—everything needed to move from a better-informed cross to a healthy foal.

OPU · IVF · ICSIFull genome analysisRecipient-mare herdEmbryos · Breedings · In-foals
Plan your breeding with Hard Six Josie Zayner, PhD josie@hardsix.com Text 618-967-9583
4,642Catalog hips
Represented sires
With family data
Family references
Price normalization

Commercial estimates are preliminary and shown with transparent uncertainty.

What Research rank means

Research rank orders the current overall research scores. Racing potential is shown separately as a relative catalog percentile; neither measure is an appraisal.

Catalog research

Find your next horse

4,642 horses in the full catalog

Shortlist Open
Important context

Research is a starting point.

Model outputs are not appraisals, guarantees or bidding recommendations. Physical inspection, veterinary findings, sale-day behavior, bidder competition and market conditions may materially change outcomes.