What about the hit Atlanta Falcons defensive back William Moore put on Seattle Seahawks receiver Doug Baldwin? It was a helmet-to-helmet shot and clearly outside the rules. There was no flag thrown on the play, but the league did levy a $15,000 fine against Moore.
Moore previously incurred a $7,500 fine this season for another hit.
Thanks to those who asked about the hit on Baldwin. I had noted it while watching the game, then forgotten to inquire about it -- in part because there was no penalty associated with the play.