Renegade, owned by billionaires Robert and Lawana Low, and Mike Repole, has 4-1 odds of winning the Kentucky Derby on Saturday. Alex Slitz/Getty Images The 152nd Kentucky Derby starts on Saturday morning at Churchill Downs Racetrack. The first-place winner receives $3.1 million and the coveted Kentucky Derby trophy. Here are some of the billionaire owners who could cash in. Horseracing is an expensive sport. So it's no surprise that among the crowd cheering on 20 thoroughbred horses during ...