Sunday's thrilling AFC divisional-round game between the Buffalo Bills and Kansas City Chiefs was a huge ratings success.
Per Pro Football Talk's Michael David Smith, Kansas City's 42-36 overtime win was the most-watched divisional-round matchup in five years with an average audience of 42.7 million viewers.
According to Smith, the rating peaked at 51.7 million in overtime.
The most recent divisional-round contest with a higher rating was between the Green Bay Packers and Dallas Cowboys on Jan. 15, 2017.
This article will be updated to provide more information on this story as it becomes available.