ARCADIA, Calif. – Troy Rankin will come to the paddock at Santa Anita and try to let it all sink in. Regardless of how his stable star, an Indiana-bred longshot named I’m Boundtoscore, fares Saturday in the $1 million Breeders’ Cup Juvenile Turf, it should be the thrill of a lifetime for a farmer and self-proclaimed “good ol’ boy” from the outskirts of Lexington, Ky.