The assessment of defensive performance in professional American football during the 2013 season is crucial for understanding team success. These measurements typically encompass various statistical categories, including yards allowed per game, points allowed per game, and turnover differential. They offer a quantified view of how effectively each team prevented opponents from scoring and gaining yardage.
Analysis of defensive efficacy in that particular year provides valuable context for evaluating coaching strategies, personnel decisions, and the overall competitive landscape. This evaluation serves as a benchmark for comparing teams and identifying trends in defensive play styles. This data is critical to understanding factors contributing to victory.