Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
We investigate the inclusion of bonus points in the National Football League (NFL) using a prediction model built on league points. Both touchdown-based and narrow-loss bonuses are shown to be significant determinants of match outcomes. This implies that including bonus points in league standings generates a more accurate ranking of teams from best to worst than a system that only rewards wins and ties. Our preferred system awards four points for a win, two for a tie, one point for scoring three or more touchdowns and one point for losing by seven or fewer points. Such a system would also make it easier for supporters to identify playoff contenders and place importance on otherwise meaningless end-of-game plays in some matches, which would increase spectator interest.