Defensive football focuses on preventing the opposing team from scoring. Teams employ various strategies, such as zone coverage and man-to-man defense, to disrupt the offense's plays. Key players include linebackers and defensive backs, who work together to tackle opponents and intercept passes. Coaches analyze the opponent's strengths and weaknesses to create effective game plans. Defensive formations, like the 4-3 defense or 3-4 defense, help teams adapt to different offensive styles. A strong defense can change the momentum of a game, making it crucial for overall success in American football.