Underdog Dornoch, who is co-owned by a former Major League Baseball star, won Saturday’s Belmont Stakes, the final race in horse racing’s Triple Crown. It already was going to be the most unusual Belmont. Traditionally, it’s always the final race in the Triple Crown. And that was true Saturday. But the race happened in Saratoga Race Course in Saratoga Springs, N.Y. That’s a track in upstate New York three hours north of Belmont Park, which is undergoing $455 million renovation. On Saturday, Saratoga was a shorter course than the one at Belmont Park, which is usually the longest race amongst th…