INDIANAPOLIS — The next Heisman Trophy winner keeps it PG-13 in postgame interviews. He looks straight into the camera, as though he’s staring into the soul of America, and sounds as if he’s practicing for his next career as a corporate keynote speaker. And when he’s not gesturing to emphasize the point he’s making about the surprise greatness of Indiana football, he makes the best use of his hands whenever there’s a football attached to them.
