The Five-Cross Files

Female families… patterns of inbreeding… sire line nicks… what really influences the strength of a Thoroughbred pedigree? How do conformation and class factor in? The Five-Cross Files explores bloodlines old and new, analyzes Thoroughbred pedigrees, tests breeding tools, and simplifies the science (and art) of successful Thoroughbred breeding.

November 2010 - Posts

Nodouble Becomes New Dosage Chef-de-Race

Six stallions were declared Dosage "chefs-de-race" this fall. I thought it would be fun to provide a short profile of each of the sires, concentrating on what type of influence they add to a pedigree. Blood-Horse's most knowledgeable pedigree historian, Tom Hall, guest-posts about NODOUBLE in this first installment.... Read More

Broodmarathon: A-R-G Spells "Bargain"

It's "Miss Argentina" Day at The Five-Cross Files. We're looking at Argentine-bred mares offered at the Keeneland and Fasig-Tipton sales. Look for a few themes, including family 13-c; mares that excelled on both dirt and turf; Argentine blue hen mare Miss Peggy, and champions close-up on the catalog page.... Read More

Recent Posts


  • Pedigree Newsletter:
    The Five-Cross Files will be featured in a new Pedigree Analysis newsletter from To sign up for this free weekly email -- or any other newsletters from The Blood-Horse -- just click here.

Recommended Reading

More Blogs