Trainer Ben Colebrook will be the first to admit Imperial Hint is the horse to beat, and by “a pretty wide margin,” in the Breeders’ Cup Sprint. But there are five reasons why Colebrook will have plenty of confidence when he sends Limousine Liberal out against the favorite Nov. 3 – the five straight stakes, three of them graded, his horse has won at Churchill Downs, the site of the 2018 Breeders’ Cup.