Fern Circle Stables and Three Chimneys Farm's King Fury (Curlin) is undefeated in two prior starts at Churchill Downs and tries to annex his first graded victory in Saturday's GII Kentucky Jockey Club S. A debut winner at the Louisville oval in September, the chestnut was eighth in Keeneland's GI Breeders' Futurity S. Oct. 3 before bouncing back to score in the Oct. 25 Street Sense S. Last time out, the 2-year-old finished seventh under Brian Hernandez Jr. in the GI Breeders' Cup Juvenile Nov. 6. "He's 2-for-2 at Churchill...