A bracket system is a method used to organize and manage competitions, particularly in sports and tournaments. It involves pairing participants or teams in a structured format, where winners advance to the next round while losers are eliminated. This system helps to determine a champion through a series of matches, often culminating in a final showdown. Bracket systems can be single-elimination, where a team is out after one loss, or double-elimination, allowing teams a second chance. They are commonly used in events like the NCAA Basketball Tournament and World Cup, making it easier for fans to follow the progress of their favorite teams.