In soccer, a clean sheet refers to a game in which one team does not concede any goals to the opposing team. It is a statistic that is commonly used to judge the performance of goalkeepers and defenders, but it is also an impressive achievement for every player on the team. The term "clean sheet" originated from the early days of soccer when scores were manually maintained on sheets of paper. When one team did not score any goals, their side of the sheet remained empty or "clean," creating the scoreless reference. A clean sheet can be achieved in any game, including league matches, cup competitions, and international matches. Clean sheets are the hallmark of any defensively strong soccer team, and they can have an impact on a teams overall season performance. In many leagues, the number of clean sheets kept by a team is used as a tiebreaker if two or more teams finish the season with the same number of points.