Extension at Contact
Also known as: extension, full extension
Extension at contact means the arms are nearly fully extended through the hitting zone, maximising the lever length of the swing and transferring the most energy into the ball.
When a hitter makes contact with the arms bent significantly, energy is lost and bat speed leaks. Proper extension means contact occurs slightly out in front of the body (on pitches out over the plate) with the arms extending through the ball — not collapsing into the body. Extension is also pitch-location-dependent: pitches inside the body require earlier contact before full extension; pitches away allow extension deeper into the zone. Post-contact extension into the follow-through compounds the force delivered.
Example
She hit the outside fastball with full extension at the front of the plate, driving a line drive to the opposite-field gap.
Related terms
- Barrel PathBarrel path is the trajectory the barrel of the bat travels through the hitting zone — matching it to the pitch plane for as long as possible maximises the chance of hard contact.
- Hand PathHand path is the route the hands travel from launch position to contact — an efficient, direct path to the ball keeps the barrel in the zone longer and prevents casting.
- Rotational HittingRotational hitting is a swing model where power comes primarily from the rotation of the hips and torso rather than forward body weight transfer — it is the dominant power model in modern baseball.
- Exit Velocity (EV)Exit velocity is how fast the ball comes off the bat, in mph. It is a ceiling metric — the harder you hit it, the farther it can go.
Related guides & benchmarks
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