
Play 05 · Track 01 · Strike · 7 min
Turn the forearm.
Leave the wrist alone.
The last hinge in the chain is the fastest — and it fires almost on its own. Stop forcing your wrist and let it whip.
01
See the face turn through contact without the wrist moving
02
Who really makes the speed: shoulder, hand, forearm
03
A 15-minute edge-on serve drill
04
How to know it worked
Watch it traced
The stroke, eight instants at a time.
Traced frame by frame from real footage, then lit like the rest of the package. Flip through it: the shape of the swing is the lesson before a word of it is written.

FIG. 05 · KYRGIOS'S SERVE
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