LOUISVILLE: The glorious uncertainty of horse racing produced an unlikely winner of the $2.2 million Kentucky Derby Saturday when Animal Kingdom stormed to victory in the 137th Run for the Roses at Churchill Downs. Riding high on emotion after a bizarre chain of events led him to Animal Kingdom's saddle, Velazquez kicked clear to win his first Kentucky Derby at his 13th attempt. Nehro finished second, while Mucho Macho Man came third, a neck behind the runner-up.