Defensive systems are the systems created by coaches to best defend against the opponent's offense. Defensive systems get more complicated and varied as level of play increases. However, it's easy to get lost in the details and forget the aim of all defensive systems: Keep the ball off of the floor!
Every player on the court, no matter if it's a defender or the middle blocker, is responsible for covering portions of the court and defending. In practices, encourage all positions to be active defenders, especially in emergency situations. Remember: A dead ball is a point for the other team, no matter whose responsibility it was to defend the ball!
