Horses aren't supposed to be able to do what Ghostzapper did. The Hall of Famer was so dazzling that the 128 Beyer Speed Figure he registered in the GIII Philip H. Iselin H.--still the highest figure in the history of American racing at a route--isn't even remembered as one of his top races. Some people might count his GI Vosburgh sprinting at three against older horses as one of his best, others might prefer his GI Woodward battle over eventual Horse of the Year Saint Liam, and still others might...