One most-severe lesson per primary mistake and court side. Average 5/10.
Track record
Basics — foundation of the game
#2 of 5Proficiency 65.75.4/10 overall
2 sessions · 4 clips analyzed · 4 lessons kept
Movement & court craft
footwork (to the shuttle) · solidknee / lunge · solidhip coil · solidrecovery to base · solidcourt position · solid
Court coverage: not measured yet (calibrate court for coverage)
Technique and mistakes — stroke & shot game
clear: 5/10smash: 5/10serve: 5/10
Weakest shot: smash (5/10)
Stroke mechanics
torso · priority ×2shoulder · solidelbow · priority ×2wrist · solidfree arm · solidhead · solidshot action · solid
Issues seen: 0% clean (≥7) · 25% severe (≤4)
Progress: Improving (4.7/10 → 6/10, +1.3)
Trend: 07-29 4.7 → 08-02 6
Weaknesses
- clear 5/10
- serve 5/10
- smash 5/10
- elbow × 2
- torso × 2
Mistakes by area (analyzed)
elbow × 2torso × 2
Advanced — polish & tactics
Consistency 54Athletic base 100Court craft 100Repertoire 42.5 (3 shots)
Rating mix: 0 solid · 3 developing · 1 needs work
Tactical errors flagged: 0 (0% of analyzed clips) — lower is better
Focus next
- torso × 2
- elbow × 2
How proficiency is calculated
Score 0–100 from technique (30%), athletic base / footwork-knee-hip (20%), court craft / recovery-position (15%), clean form ≥7 (10%), low severity ≤4 (10%), shot repertoire breadth + weakest shot (10%), and consistency (5%). Official ranks need ≥3 clips analyzed or ≥2 sessions; thinner samples stay Provisional.
smash · elbow
left court sideRating 5/102026-07-29
Mistake: Racket elbow angle was bent at 93.9 degrees at contact instead of reaching the optimal 150-178 degree extension range.
Fix: Reach up fully and reach for high contact above the racket shoulder.
Why it matters: Striking with a bent elbow drops the contact point and reduces the lever arm length, cutting power and steepness on the smash.
Drills
- High contact shadow overhead swings focusing on fully extending the right arm at the top of the swing
- Feed and smash drill hitting high overhead shuttles while focusing on hitting at full extension
serve · elbow
right court sideRating 6/102026-08-02
Mistake: Racket arm elbow angle was 141.7 degrees at contact, well above the recommended 60-120 degree range for a serve.
Fix: Keep your racket elbow bent around 90 degrees and push smoothly through the shuttle using wrist and forearm.
Why it matters: Over-extending the elbow during a low serve forces a stiff arm stroke, losing delicate touch and causing the shuttle to lift too high over the tape.
Drills
- Shadow low-serve practice maintaining a fixed 90-degree elbow bend.
- Targeted low serve practice focusing on forearm push rather than whole-arm reach.
serve · torso
centre court sideRating 4/102026-07-29
Mistake: Your torso leaned 23.0° from vertical during the serve, exceeding the ideal 0-15° range.
Fix: Maintain an upright spine and stable torso throughout the serving motion.
Why it matters: Leaning off-vertical destabilizes your core base, throwing off shuttle timing and height control.
Drills
- Mirror serving: practice your serving motion while maintaining an upright posture in front of a mirror.
- Stationary shadow serve focused on keeping head and chest level.
clear · torso
left court sideRating 5/102026-07-29
Mistake: Extremely flat upper body rotation with shoulder-vs-hip rotation measured at only 0.6 degrees compared to the recommended 20 degrees or more.
Fix: Turn your non-racket shoulder toward the net during preparation so your upper body coils before swinging.
Why it matters: Failing to coil the body deprives the stroke of core rotational power, forcing the arm to generate all the force and limiting shuttle depth.
Drills
- Shadow overhead preparation focusing on turning chest to the side wall before swing
- Feeder clear drills emphasizing chest turn and shoulder rotation