When Triple Crown winner Seattle Slew retired from racing in 1978 to stand at stud at Spendthrift Farm, no one could be certain he would be a successful sire. But just four years later, his dark bay daughter Landaluce won the Hollywood Lassie Stakes by twenty-one lengths--a margin of victory that remains the largest ever in any race by a two-year-old at Hollywood Park. California horse racing had a new superstar, and Slew was launched on a stud career...