Collin Morikawa explains how to keep your hands and body in sync
| Target Fault | Focus Area |
|---|---|
| Loss of connection | Full Swing |
Why This Drill Works (Kinetic Mechanics)
Arms drifting away from the torso make the backswing steep and off plane, forcing compensations in the downswing. The under-armpit object gives instant feedback the moment the lead arm separates, training the arms and chest to move in sync so the club stays on plane back and through: the same connection feedback loop a major champion uses to keep his swing calibrated.
How to Perform the Drill
The coach gives no set rep count. Our general guideline: 3 sets of 10 slow rehearsal reps, then half swings with a ball, adding speed only once the steps feel natural.
Tuck a glove, headcover, or folded lanyard under the lead armpit at address (Morikawa uses this exact drill on tour to stop his arms drifting away from his torso).
Start with short swings: keep the object trapped until the club is halfway back, checking the arms and chest are turning as one unit.
Progress to three-quarter swings, then full swings to the top, still keeping the object pinned; if it drops, the arms have separated from the body's turn.
Hit small shots with the object in place, letting the body rotation, not independent arm lift, control the club going back and coming down.
Swing Faults & Ball Flights Addressed
Comprehensive Guides Featuring This Drill
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