Leg Drive on Groundstrokes

Leg drive is the foundation link of the kinetic chain on every groundstroke, and it is also the link most often skipped by recreational players, who tend to stand relatively upright and swing primarily with the upper body. A player with good leg drive bends the knees during the loading phase of the swing and pushes into the ground as the forward swing begins, generating ground reaction force that travels up through the hips and torso before reaching the arm. This lower-body contribution is largely responsible for the difference in effortless-looking power between advanced and recreational players hitting a stroke that otherwise looks similar from the waist up.

Leg drive requires knee bend during the loading phase — a player who never lowers their center of gravity has nothing to push off from when the forward swing begins. It also requires timing: the push should occur as the forward swing initiates, not before or after, so the resulting force arrives at the hips and torso exactly when they need it to begin rotating. Players recovering from injury, fatigued late in a match, or simply unaware of the leg's role often default to an arm-dominant swing that looks superficially similar but generates measurably less pace for the same amount of effort.