John Fanelli, 49, executive manager at a Nissan dealership in Turnersville, N.J., is living such a dream. He claimed Math Wizard for $25,000 on Jan. 31 at Gulfstream Park, never imagining that the 3-year-old that had gone winless through his first four starts before breaking his maiden would emerge as the 31.10-1 upset winner of the $1 million Pennsylvania Derby on Sept. 21 at Parx Racing.