Hello again, horse racing fans, to the pinnacle of the autumn racing season for three-year-olds. The $1 million Pennsylvania Derby is upon us, and the excitement at Parx Racing is absolutely palpable. This weekend, the nation’s top sophomores converge on Bensalem, Pennsylvania, for the premier event of the fall, a 1 1/8-mile test of speed and stamina that often serves as a key prep for the Breeders' Cup Classic.