The post-season is the period of time between the regular season and the off-season in most organized sports leagues, often known as play-offs. In the four major North American sports leagues (NFL, NBA, NHL, MLB), the top ranking teams in the league will compete in a single-elimination tournament during the post-season to determine an annual season champion. In the NFL, these games are "once-and-done" where the winning team automatically advances. In the other three leagues, the games are determined by a "Best-of" series (usually "Best-Of-Seven," in which a team must win the most games out of seven to advance).
In Major League Baseball, the post-season is known as the World Series. In the National Hockey League, it is known as the Stanley Cup (pictured). In the National Football League and the National Basketball Association, it is simply known as the play-offs; however, the last game of the NFL play-offs is known worldwide as the Super Bowl and it is universally recognized as the biggest sporting event of the year.