Secretariat was the horse that broke a 25-year Triple Crown dry spell, setting world records and winning the final Belmont Stakes with an eye-goggling 31-length win (in other words, so far ahead that the horses behind look teeny). He's pretty much the horse amongst race fans, and is known for having the biggest recorded heart (22 lbs). But it all started with a coin toss.
THR says Glenn will play "a southern-bred aristocrat who loses the horse in a coin toss," although that's not quite how it plays out. Glenn must be Ogden Phipps, and as the story goes, there were coin tosses to discern who would get what horse. Phipps won the toss, but Penny Chenery scored an unborn foal in the deal who turned out to be Secretariat. Walsh will play Penny's husband, "a successful attorney who is accustomed to his wife being at his beck and call," and who is, undoubtedly, in line for a wake-up call. Finally, John Malkovich will play a trainer who underestimates the horse's power (Lucien Laurin?).
And they're off!