Thoroughbred racehorse Secretariat was the first US Triple Crown champion in 25 years, setting records in the Kentucky Derby and Belmont Stakes that still stand today. In fact, in the 40 years since, only one Derby winner has even come close to matching Secretariat’s time of 1:59.40. Secretariat advanced from last to first to win the Preakness and won the Belmont Stakes by an unprecedented 31 lengths. What controversy arose regarding the time calculations of the 1973 Preakness? Discuss