The T-drill is a basketball training exercise designed to improve a player's agility, speed, and ball-handling skills. It involves a series of movements that simulate game-like situations, helping players develop quick decision-making and coordination. The drill is typically performed on a court marked with a "T" shape, where players sprint, shuffle, and dribble the ball through various sections. During the T-drill, players start at the base of the "T," sprint to the top, then shuffle laterally to each side before returning to the starting point. This repetitive motion enhances a player's ability to change direction rapidly, which is crucial for effective defense and offense in basketball games.