Johnny Davis has something to show the officials. It’s a late January night in Evanston, Ill., Wisconsin leading Northwestern by five, emotions running high, and here’s his left thumb, drenched in blood after a foray into his upper nostril. Two plays ago, a wayward swipe struck a driving Davis across the face and drew no whistle. There’s your proof the National Player of the Year front-runner bleeds like everybody else. Davis waves his hand around for everyone to see as he stalks back to the huddle and composes himself. It’s too late to relitigate that particular moment, but the referees are kind enough to grant a timeout, so he can tidy up.