VESS is a term used in the field of sports, specifically in volleyball, to refer to a violation known as "volleyball excessive spin serve." This occurs when a player intentionally imparts excessive spin to the ball while serving. The VESS is considered a fault and results in a point awarded to the opposing team. The main objective behind this rule is to maintain fairness and ensure a level playing field.
When a player serves the ball, they are expected to strike it cleanly and without excessive spin. This allows the receiving team to accurately assess the trajectory and perform effective receiving techniques. However, when a VESS is committed, the excessive spin introduces unpredictable movement to the ball, making it difficult for the receiver to anticipate its path and execute proper passing, setting, or attacking plays.
To determine whether a serve qualifies as a VESS, referees closely observe the rotation of the ball during flight. If the spins noticeably deviate from the standard serve, indicating a player's deliberate intention to impart excessive spin, the violation is called, and the opposing team is awarded a point.
The VESS rule maintains the principles of fairness and sportsmanship in volleyball. It emphasizes the importance of clean, skillful serving without introducing excessive unpredictability into the game. By discouraging VESS violations, the rule ensures a greater degree of predictability and allows the receiving team to effectively respond to serves, contributing to a more balanced and competitive match.
