Volleyball Glossary

← Back to All Terms

Double Block

The double block in volleyball is a defensive tactic where two blockers jump simultaneously at the net to defend against an opponent's attack. This fundamental blocking strategy represents the most common blocking formation in modern volleyball, balancing the need to take away hitting space from the attacker while maintaining adequate floor defense coverage. Understanding double block mechanics, timing, positioning, and coordination is essential for defensive success. The primary purpose of a double block is to reduce the attacker's available hitting angles by creating a barrier that covers significant net space. Two blockers jumping together can potentially cover up to four feet of horizontal net space, dramatically limiting where the attacker can successfully hit. The double block aims to eliminate the attacker's preferred hitting option, typically either the cross-court angle or the line shot, forcing the attacker to hit into defensive coverage or attempt a more difficult shot. Proper double block formation requires precise positioning and coordination between the blockers. The blockers must close the gap between them to eliminate seams where the ball could pass through. Hands should be positioned to penetrate over the net and angle inward, taking away space and directing blocked balls back into the opponent's court. The outside hands of the outside blockers should turn slightly inward to protect the line or angle, depending on tactical priorities. The responsibility for setting the double block typically belongs to the middle blocker, who reads the setter and moves to join the outside blocker or opposite blocker. This movement must be timed precisely to arrive at the blocking position simultaneously with the outside blocker's jump. Late arrival creates seams or forces early jumping that reduces effectiveness. Middle blockers develop sophisticated reading skills to anticipate set direction and initiate their movement before the ball leaves the setter's hands. Communication between blockers is critical for effective double block execution. Blockers use verbal and visual cues to coordinate their positioning, timing, and tactical focus. Common communication includes calling which attacker to block, confirming line or angle responsibilities, and coordinating jump timing. Pre-rally discussions establish blocking assignments and tactical priorities. During rallies, quick verbal cues and hand signals allow for rapid adjustments. Double block positioning varies based on strategic emphasis and scouting reports. A "line block" positions the outside blocker's outside hand directly over the line, taking away the line shot and forcing the attacker cross-court into floor defense. An "angle block" cheats slightly toward the cross-court angle, leaving the line more vulnerable but reducing the attacker's power angle. The chosen positioning reflects defensive philosophy, attacker tendencies, and game situation considerations. Timing challenges in double blocking arise from the need for two players to jump simultaneously despite different starting positions and movement requirements. The outside blocker or opposite blocker typically has a stationary starting position, while the middle blocker must move laterally before jumping. This asymmetry requires the middle blocker to read early and move quickly, while the outside blocker waits for the middle to arrive before initiating the jump. Advanced blockers develop intuitive timing through repetition and partnership familiarity. Against quick tempo offenses, executing effective double blocks becomes significantly more challenging. Quick sets leave minimal time for middle blockers to transition and form blocks with outside partners. Teams must choose between committing the middle blocker early to specific attackers or attempting to read and react, which often results in single blocks or late double blocks. Some defensive systems prioritize single blocks on quick attacks while emphasizing double blocks on higher tempo sets. Double block footwork varies based on distance traveled and time available. For short distances, a side step or cross-step pattern allows blockers to maintain ready position and jump quickly. For longer distances, a running approach followed by a plant step provides necessary speed but requires more time to execute. Blockers must balance movement speed with the ability to establish stable blocking position and proper timing. Elite middle blockers excel at efficient movement patterns that maximize speed without sacrificing blocking readiness. Training double block skills involves partner-specific drills that emphasize timing, communication, and coordination. Blockers practice movement patterns, gap closure techniques, and synchronized jumping. Shadow blocking drills without attackers allow focus on footwork and hand positioning. Live blocking against attackers develops reading skills and tactical decision-making. Video analysis helps blockers identify seams, timing issues, and positioning errors that can be corrected through targeted practice. The relationship between double blocks and floor defense is strategically interconnected. When a double block forms on one side of the court, floor defenders adjust their positioning based on the block's location and what hitting angles remain available. A well-formed double block simplifies floor defense by limiting attacker options to predictable areas. Communication from blockers to defenders about block positioning helps defenders optimize their court coverage. Double blocks create offensive opportunities through block-outs and touches. Skilled attackers intentionally hit balls off blockers' hands to redirect the ball out of bounds or into difficult positions for defenders. Recognizing these attacking tactics, blockers adjust hand positioning and jump timing to prevent clean block-outs. Soft block techniques, where blockers absorb the ball's impact rather than attempting hard stuffs, can keep balls in play and in front of defenders. Against different attacker types, double block strategies adapt accordingly. Against power hitters, double blocks emphasize strong hands and net penetration to stuff or slow down attacks. Against tooling specialists, blockers focus on hand discipline and preventing block-outs. Against tactical hitters who use tips and roll shots, blockers must balance jumping high with being ready to react to off-speed attacks that go over the block. Physical demands of double blocking include explosive jumping capability, upper body strength for hand stability and penetration, lateral movement speed, and endurance to maintain blocking effectiveness throughout matches. Strength training focuses on shoulder stability, core strength, and leg power. Plyometric exercises develop explosive jumping and rapid movement capabilities. Conditioning programs ensure blockers maintain effectiveness in late-game situations. In summary, the double block represents a fundamental defensive tool in volleyball that requires technical skill, tactical understanding, and coordinated execution. Effective double blocking combines proper positioning, timing, communication, and strategic adjustment to limit attackers' options and create opportunities for successful defense. Through dedicated training and partner development, blockers create formidable double blocks that anchor strong defensive systems.