New to running racetracks, Aidan Butler, The Stronach Group (TSG)'s chief strategy officer and acting executive director of California Racing Operations, has worn all sorts of suits belonging to all sorts of worlds--horse racing, legal affairs, business management, and technology--that he says have prepared him for the task. He founded a sports equipment company called GuardLab, which specializes in mouthguards, for example. He was managing director of a large litigation law firm called Gilbert's, its area of expertise in intellectual property--though he isn't, it should be noted, an attorney. Butler,...