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
Ashton (horse) horses including Constantia, the dam of the St Leger winner Ebor. Serpent, a son of Eclipse, sired no other horses of consequence. Ashton's dam Miss Haworth was a member of Thoroughbred family 29 and therefore closely related to several notable horses including Rowton and Landscape. Ashton was unraced as a two-year-old and made his racecourse debut on 30 May 1809 at York Racecourse. He started the 6/5 favourite for a sweepstakes over one and three quarter miles and won "very easy" from Lord Fitzwilliam's colt Whitenose. In summer he ran a trial race against the stable's 1808 St Leger winner