Ten minutes of actual play over an average of three hours, ten minutes of TV time. One minute of NFL play per ten minutes of TV time. Thirty-one plays will be kickoffs (50+% of which will be touchbacks), field goal attempts, kneel-downs, or punts (25%+ will be fair catches).
Yet they say soccer is boring because there aren't enough scores? Isn't it boring when there's no play 90% of the time?
To me it is