[bc_video_id:290504:]LOUISVILLE, Ky. – With Kentucky Derby Day just more than a week away and rain in the forecast for the weekend, workout activity began to pick up at Churchill Downs on Friday. Three potential Derby starters, including the once-beaten Vyjack, breezed during the special session following the renovation break, with at least a half-dozen more works now on the schedule for Saturday.[:slideshow-right:]