http://www.msn.com/en-us/sports/hor...ican-pharoah-at-the-belmont-stakes/ar-BBkSstr My estimate is that Secretariat would run the Belmont in 2.22.0 ish simply on the track being faster today. Then, if there was a horse within 1 meter of him, he probably would have run a 2:21 ish. [Top top top horses really dislike other horses being near them.] That means he would have crushed American Pharoah. There is no comparison between Secretariat and any other horse in history thus far. Maybe Man-O-War, but even that is unlikely. Secretariat was a freak of nature.
2015 - 1972 = 43 > 25 Still, was Secretariat juiced? I would not be surprised at all. Money attract criminals like moth to a flame. Ramsey: A-Rod juiced his way out of baseball history http://gazette.com/ramsey-a-rod-juiced-his-way-out-of-baseball-history/article/1553465
There are websites out there dedicated to the art of juicing horses and other animals. Example: http://horseprerace.com/performance-supplements/ The most popular and expensive of which, known as TB-500, can be found at: http://horseprerace.com/performance-supplements/tb-500-injection-thymosin-beta-4-10mg-2ml-1-dose/