LOUISVILLE, Ky. - For the first time in the 145 year history of the Kentucky Derby, a winning horse was disqualified, resulting in a new champion for the race.  Maximum Security crossed the finish line first at Churchill Downs, but a challenge by Country House's jockey, Flavien Prat, meant a review.

Stewards poured over various replays of the stretch run and after 17 minutes determined that Maximum Security, ridden by Luis Saez, impeded not only Country House but also War of Will, ridden by Tyler Gaffalione. As a result Maximum Security dropped to 17th in the 19 horse field.

With the official win, Country House becomes the second longest shot to ever win the Derby at 65 -1. Donerail in 1913 still holds the record at 91.5-1.  Country House paid $132.40 — the second highest payout in Derby history. Code of Honor finished second and Tacitus finished third. Trainer Bob Baffert was going for his sixth Derby win, but came up short. Improbable finished fourth, Game Winner, fifth and Roadster came in fifteenth.