In trying to fathom why Bricks and Mortar has become the finest grass horse in the United States – perhaps the finest racehorse, period – students of pedigree will turn immediately to his sire, Giant’s Causeway, who won five Group 1 races in England and Ireland in 2000 and came within Tiznow’s neck of winning the Breeders’ Cup Classic in Kentucky. The experts also like the fact that Bricks and Mortar is inbred at only the third remove to Storm Bird, a fabulous runner and exceptional stallion who imparted both stamina and speed.