Excerpt from BH...
A source close to the Breeders' Cup said that Trevor Denman, the voice of Santa Anita Park and Del Mar in Southern California, was ESPN's first choice to replace Durkin. Denman, a native of South Africa, has served as an analyst on NBC's previous Breeders' Cup telecasts.
http://news.bloodhorse.com/viewstory.asp?id=35149