2015 Kentucky Derby the lead in the homestretch. The race marked the fourth Kentucky Derby win for horse trainer Bob Baffert and the third win for Espinoza. The Kentucky Derby is a race for 3-year-old Thoroughbred horses. The 2015 field was determined by a points system that was introduced in 2013. The post position draw of the entries for the Kentucky Derby was held on Wednesday, April 29, 2015, at the Churchill Downs Racetrack clubhouse. American Pharoah was installed as the 5-2 morning line favorite. The day after the draw, Todd Pletcher scratched Stanford, stating that the horse was "fine" but they were
American Quarter Horse by a group of horsemen and ranchers from the southwestern United States dedicated to preserving the pedigrees of their ranch horses. The horse honored with the first registration number, P-1, was Wimpy, a descendant of the King Ranch foundation sire Old Sorrel. Other sires alive at the founding of the AQHA were given the earliest registration numbers Joe Reed P-3, Chief P-5, Oklahoma Star P-6, Cowboy P-12, and Waggoner's Rainy Day P-13. The Thoroughbred race horse Three Bars, alive in the early years of the AQHA, is recognized by the American Quarter Horse Hall of Fame as one of the