Henry Grillo demonstrates how to fix early extension by comparing a 'last guy' amateur move to a pro-level hip rotation. He emphasizes keeping the lead hip deep and clearing space for the arms to prevent thinning or fatting the ball.
Avoid moving your hips toward the ball during the downswing (early extension).
Focus on pushing the lead glute back and away from the target line to create room.
Maintain your spine angle from setup through the impact zone.
Clearing the hips properly allows the arms to swing on a more consistent inside-out path.
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Thin contact — Causes, drills and coaches for this miss