When Larry Rivelli picked up the telephone, he did so from his Del Mar hotel room, watching a race replay of a horse claimed out of his yard. "I'm a little OCD," he said, in explanation of his unusual leisure-time viewing, before turning the spotlight onto a latest obsession, One Timer (Trappe Shot), his leading contender for the GII Breeders' Cup Juvenile Turf Sprint. "It's all I do. I'll watch a race of One Timer. Then I'm watching a breeze. Then I'm watching the video of his last breeze," he...