Serve Consistency Drill
Target: 65% first-serve placement in deuce court.
life module
Life Index
Fields outside the product surface that still shape the stack.
Split-Step Timing
Use video delay to detect late loading before wide balls.
Backhand Contact Height
Tracking shoulder-line stability under pressure rallies.
Timeline
2024 Q1
Started weekly telemetry log with serve zones.
2024 Q4
Improved tie-break composure with breath protocol.
2025 Q3
Added footwork cadence tracking using short clips.