Pitcher Predictive Analysis
Comprehensive Biomechanical Assessment Report
Kinetic Chain Efficiency
Detailed Metrics
| Metric | Value | Accuracy | Status |
|---|---|---|---|
| Stride Length | 65 in (88%) | ± 3 in | Excellent |
| Knee Lift Height | 62% | ± 2% | Excellent |
| Hip-Shoulder Separation | 38° | ± 4° | Good |
| Shoulder Layback (ER) | 174° | ± 5° | Excellent |
| Trunk Lateral Tilt | 22° | ± 3° | Good |
| Lead Leg Knee Flexion @ FS | 46° | ± 2° | Moderate |
| Elbow Flexion (Cocking) | 94° | ± 5° | Monitor |
| Metric | Value | Accuracy | Status |
|---|---|---|---|
| Pelvis Rotation Velocity | 680 °/sec | ± 50 | Good |
| Torso Rotation Velocity | 1050 °/sec | ± 75 | Excellent |
| Shoulder IR Velocity | 4400 °/sec | ± 200 | Excellent |
| Elbow Extension Velocity | 2300 °/sec | ± 150 | Excellent |
| Forearm Pronation Velocity | 1800 °/sec | ± 100 | Excellent |
| Hand Speed at Release | 64 MPH | ± 2 MPH | Good |
| Metric | Value | Accuracy | Status |
|---|---|---|---|
| Ball Velocity | 89.4 MPH | ± 0.5 | Excellent |
| Spin Rate | 2250 RPM | ± 100 | Excellent |
| Spin Efficiency | 94% | ± 3% | Excellent |
| Spin Axis | 1:15 Tilt | ± 15 min | Good |
| Horizontal Break | 8 inches | ± 2 in | Good |
| Vertical Break (IVB) | 16 inches | ± 2 in | Strong |
Pitcher State & Risk Signal Suite
Energy transfer is ~85-90% efficient. Slight early hip rotation limits max velocity separation. Elbow cocking angle >90° places increased stress on UCL.
No velocity degradation detected. Torso rotation consistent across sample. No posture sag or release drift observed.
Stride length shows ~4% variance (highest). Arm slot, knee lift, and max ER show <2% variance. Within acceptable tolerances.
Rhythmic and fluid tempo. Time from first movement to peak knee lift consistent within 0.1s. No hesitation or micro-adjustments.
No mechanical regime shift detected. Operating within single, stable mechanical pattern throughout the session.
Summary & Key Insights
Overall Assessment: Hayden Tarsia displays a repeatable, college-level delivery with high consistency in the upper half (arm path/slot) but slight variability in the lower half (stride length/hip timing). The delivery is mechanically sound with excellent spin characteristics.
- Strength: Excellent shoulder layback (174°) enables elite "whip" action and velocity potential
- Strength: High spin efficiency (94%) with strong vertical break (16 in) creates riding fastball profile
- Strength: Excellent release point consistency (<2" variance) indicates strong proprioception
- Watch: Early hip-shoulder separation (12°) causes minor elastic energy leak - focus on hip delay drills
- Watch: Stride length drifts from 88% to 84-85% during session - monitor leg fatigue and conditioning
- Note: Elbow cocking angle >90° is common velocity enhancer but warrants UCL stress monitoring