All regular season games and post-season games sponsored by the NFL.
The regular season is limited to 17 games (not more than 20 including pre-season). The post-season will be a four-tiered (“wild card” game, division playoff game, conference
championship and Super Bowl game) play-off system throughout the term of the Agreement.
I don't think the league could add a post season game without changing the CBA with the players' consent.
ARTICLE 31
ADDITIONAL REGULAR SEASON GAMES
(a) The League and/or Clubs shall have the discretion to increase the number
of regular season games per Club from sixteen (16) to seventeen (17) (but not more),
provided that the combined total of preseason and regular season games played per Club
shall not exceed twenty (20) games. The League and/or Clubs shall not increase the num-
ber of regular season games per Club to eighteen (18) or more games.
ARTICLE 37
POSTSEASON PAY
Section 1. System: A four-tiered (“wild card” game, division playoff game, conference
championship and Super Bowl game) play-off system will be used and continued through-
out the term of this Agreement. Any player on a Club that has earned a first-round bye
will be paid an amount equal to the amount received by players on a non-Division Winner
participating in a “wild card” game for that Club’s bye week, provided such player is on
the Club’s 53-player Active/Inactive List or the Club’s Reserve/Injured List as of the Sun-
day immediately preceding such Club’s Division Play-off game.