Watch: Tom Johnson flagged for roughing the passer
Vikings defensive tackle Tom Johnson was flagged for playing football, or roughing the passer, according to NFL referees.
In what would have been a three-and-out for the Saints, Johnson's roughing the passer penalty extended a New Orleans drive which led to a field goal.
NFL Network's Tom Pelissero tweeted out the rule for hitting a quarterback too low.
The rest of the Twitter world was in disbelief over the call.