Growing up the son of a successful racehorse owner has its perks. Days hanging around the backstretch, getting to know and experience the animals up close, seeing firsthand the fast-paced roller coaster that is a racing life. But also attached to the deal is the heft of living in your father's shadow within the game, particularly if you happen to share his name. Jimmy Riccio, Jr., beginning with a push from dad, taking off from one chance encounter and soaring via a lot of elbow grease and teamwork, has achieved...