The term "4-3" often refers to a specific formation used in various sports, particularly in American football. In this formation, there are four defensive linemen and three linebackers. This setup is designed to provide a strong defensive front while allowing flexibility in coverage against both the run and pass. In addition to sports, "4-3" can also refer to a numerical ratio or a scoring system in games. For example, in basketball, a team might win a game with a score of 4-3, indicating a close match. This numerical representation can apply to various contexts, including competitions and rankings.