DOUBLE BLOCKING Learn volleyball skills and volleyball practice from Dr. Gylton Da Matta, a member of the International Volleyball Federation technical development committee. Watch how to integrate this drill into your volleyball lessons. Consists of two blockers composing a combination block in order to double the area of blocking a powerful attack. Volleyball blocking is defined as deflecting the ball coming from your opponent’s spiker. Blocking is used to deflect the ball coming from a spiker. The goal is to block, intercept and absorb the ball back into the opponent's court.