07/29/2016 8:30AM

Barkley, Mach One Rules bring rivalry to Emerald Downs Derby


Barkley will put his undefeated record on the line Sunday when he runs in the richest race for 3-year-olds at Emerald Downs, the $75,000 Emerald Downs Derby. Once again the horse he will have to beat is Mach One Rules.