A recent post about the prevalence of Leo San blood in 2009’s top sires of cutting horses drew a lot of response from readers, and led me to dig a little deeper. Alice Walton, who bred and owns 2009 Borden Milk NCHA Futurity champion Rockin W, noted that he descends through his dam, NCHA Horse of the Year Boon San Kitty, to her maternal granddam, Hula Stopa, a double-bred granddaughter of Leo San.

In addition, Rockin W carries another cross to Leo San through Grulla San, the dam of his paternal grandsire High Brow Hickory. As noted in the earlier post, Rockin W’s sire, Dual Rey, also carries Leo San.

A closer look reveals that all but one of the 28 finalists in the 2009 NCHA Futurity trace to Leo San bloodlines, sixty years after that stallion’s birth.