Defenders must have quick reaction times to anticipate opponents’ movements and make timely tackles. Reaction training focuses on improving reflexes, decision-making, and agility. One effective method is practicing one-on-one situations where a defender must respond to an attacker’s unpredictable movements. Agility drills, such as lateral shuffles and quick pivots, prepare defenders for sudden changes in direction. Reaction balls, which bounce unpredictably, are useful for improving hand-eye coordination and reflexes. Watching games and analyzing defensive plays also sharpens situational awareness. By combining physical training with mental preparation, defenders can react more effectively during high-pressure moments and become more reliable in their roles.