This summer was supposed to mark the shift from legitimacy to supremacy, for both the precocious 36-year-old coach at Oklahoma and the merry band of coaching renegades who taught him to challenge every long-held convention in college football. Lincoln Riley had already obliterated the notion that the Air Raid coaching tree belonged on the fringe of the forest. He had mentored three Heisman finalists and made three College Football Playoff appearances in just three seasons as the head coach at OU. And, like all bright, innovative and adaptive young masterminds, he had become another Coach of the Future, the moniker hanging like a giant blinking neon sign above his head.