‘“The blueprint for winning in the NFL changes every few years, and I think last season we saw that running backs are still valuable assets,’’ the Buffalo Bills all-time rushing leader said Sunday afternoon after signing a slew of photos, helmets, jerseys, and footballs at the Legends & Stars Winter Sports Expo at Batavia Downs Gaming & Hotel. “I think it’s pretty safe to say that the Philadelphia Eagles don’t even reach the Super Bowl without Saquon doing what he did.”’