McKinzie, one of the top older horses of his age group his entire career, has been retired and will begin stallion duties early next year at Gainesway Farm.
As a result, McKinzie, 5, will miss this year’s Breeders’ Cup on Nov. 7 at Keeneland. He finished second last year in the Classic at Santa Anita and was a potential runner this year in the Dirt Mile.
McKinzie finished fourth in the Alysheba Stakes on Sept. 4 at Churchill Downs in what turned out to be his final career start.