You will find the answers to those questions and more in Legacy of Lexington, a book written expressly as a reference for the sport horse breeder in North America. This is also the story of Lexington, one of the greatest racehorses of all time, whose record as a stallion has never been bettered—a position he’s held for over one hundred fifty years. This book will detail both how, contrary to the current dogma in sport horse circles, it is in America that breeders developed the definitive distance racehorse in the world, and also where you can find those bloodlines in the Thoroughbred and other American breeds.
The author, Kathleen Kirsan, has been involved with sport horse breeding since 1988 and has been writing on the subject since 2003. Driven by a deep interest in genetics and how it applies to sport horse performance, she has become a leader in pedigree evaluation and employing Tesio Methods to sport horse design.
The majority of domestic sport horse breeders are not as well versed in Thoroughbred bloodlines as their Thoroughbred racehorse breeder counterparts. I know I am not, but I have found that once I gained an understanding of the history of our sport horse breeds and their bloodlines, that knowledge dramatically altered not only the way I viewed our North American breeds, but also the practice of breeding itself.
Because the racehorse, particularly the Thoroughbred, is such an important portion of sport aptitude and historically is such an essential portion of our best-performed North American sport horses (see Part IV and Appendix E ), we should at least have a basic knowledge of our uniquely North American Thoroughbred. How else will we be able to use the marvelous resource of our domestic Thoroughbred to our advantage in our sport-horse breeding programs if we don’t comprehend its important bloodlines for our goals?