I don't know the entire specifics but I have a pretty good idea. Rick likes to use Prado(calls in NY), Johnny V(riding Flower Alley), bejarano(calls in Ky), Gomez(call on Motts horse), and thats pretty much it. Once none of those guys could shake loose you are in a jam. Riders take calls for one million dollar races real EARLY!!! WIthout a jock he liked I guess tehy just decided to use the guy who rode him last time. he can kiss that mount goodbye now.