Blocking in volleyball is a defensive play that is accomplished by one, two, or three front-row players jumping and pressing their arms over the net in an effort to "block" the opposing hitter. Blocking is a skill used to prevent the opponent from a successful attack hit. Here are some key points about blocking in volleyball:

• A block is a defensive playing action at the net. A block may be performed by one front row player or a combination of front row players jumping near the net in front of an opposing attacker.
• The goal of blocking is to block the spiked ball with the hands or arms preventing the spiker from a successful attack.
• Blocking is usually practiced in a controlled setting where two (or three) players are pressing over the net with both hands. In the real world, however, the situation is much more dynamic and requires a lot of anticipation and quick reactions.
• Blockers should be in a ready position to block with arms up, with elbows out in front of them, and their palms facing the net about eye level. Players should be ready to jump and block the ball at any second because the ball can come over unexpectedly.
• Positioning is all about squaring your hips and shoulders to the net. Pick your spot, get square to the net, go in the air, and hold your space.
• Advanced volleyball teams may have different blocking strategies. For example, one team may use a blocker to just take up space so that the defensive players can cover the rest of the court that the blocker isnt defending. Also, an advanced blocker may just try to deflect the ball to a teammate just to keep the ball in play.

In summary, blocking is a crucial skill in volleyball that requires anticipation, quick reactions, and proper positioning. It is a defensive play that is accomplished by one, two, or three front-row players jumping and pressing their arms over the net in an effort to "block" the opposing hitter.