Tennis Athlete Performance Evaluation

Executive Summary

Solid junior-tier athlete with two clear focus areas.

[ATHLETE NAME REDACTED] ranks in the solid developing junior across her tested markers, with particular strengths in linear speed, lower-body power, and aerobic conditioning. Her testing also flagged two specific priority focus areas: a shoulder external-rotation deficit on her dominant (serving) side, and a moderate single-leg jump asymmetry with right-leg dominance — both common findings in right-handed competitive tennis players, both addressable with targeted programming.

Overall Profile Score

P60

Solid Developing Junior

Key Strength · Speed

1.94s 10m

Top 44% of peers

Key Strength · Vertical

27.4cm CMJ

Above U17 median

Priority Focus

Dominant-side
shoulder ER

Injury-risk flag

What stood out from this evaluation

Three findings to know about, in order of training priority.

Shoulder ER strength deficit on dominant side (86 N R vs. 104 N L = 17% asymmetry, dominant weaker). Combined with reduced shoulder IR ROM on the same side (58° vs. 76°), this is a published risk pattern for dominant-shoulder pain in adolescent tennis players. Highest priority addressable item — has clear program path.
Single-leg jump asymmetry at 13.6% (right-dominant). Within the "monitor" band — programmable improvement target for the next training block.
Linear speed and lower-body power are her current strengths. 10m sprint of 1.94s and CMJ of 27.4 cm both sit above the U17 junior tennis median. Foundation is solid — current programming is producing results.

Body Map · Visual Focus Areas

Where to look on the body — at a glance.

A visual summary of every flagged finding from this evaluation. Red markers are priority injury-risk or performance items addressed in the next training block. Yellow are areas to monitor. Green confirms strengths to maintain. Each marker references a numbered detail card to the right.

Priority — Address in next training block

Monitor — Programmable improvement target

Strength — Confirmed area to maintain

1Right Shoulder · External Rotation

PRIORITY · INJURY-RISK FLAG

Dominant-side ER strength 86 N vs. 104 N non-dominant — 17% deficit on the serving shoulder. ER:IR ratio of 0.58 sits below the protective 0.66 threshold (Ellenbecker & Davies). Combined with reduced shoulder IR ROM (58° R vs. 76° L = GIRD pattern), this is the published #1 risk pattern for dominant-shoulder pain in adolescent tennis. Programmable in 6 weeks.

2Right Shoulder · Internal Rotation ROM

MONITOR · GIRD PATTERN

Shoulder IR ROM is 58° on the right vs. 76° on the left — an 18° dominant-side deficit. Pairs with finding #1 — same root cause (chronic serve loading), same protocol fix (sleeper stretch, cross-body stretch, daily mobility).

3Left Leg · Single-Leg Power

MONITOR · ASYMMETRY

Left-leg single-leg jump 11.4 cm vs. right 13.2 cm — 13.6% right-dominant. Within tennis-acceptable range but flagged for targeted programming this block. Bulgarian splits prioritizing left, single-leg RDLs, lateral bounds. 8-week target: sub-10% asymmetry.

4Right Leg · Power Engine

STRENGTH

Dominant push-off leg performing strongly: SLJ 13.2 cm, knee extension 318 N, 5-0-5 (R-turn) 2.62s. Sport-natural dominance pattern; current strength here is supporting court coverage.

5Trunk · Rotational Power

STRENGTH

Rotational med-ball throw 9.6 m (forehand) / 8.4 m (backhand). Both above U17 median. Trunk rotation ROM balanced. Solid kinetic-chain transfer foundation.

6Aerobic Base

STRENGTH

Yo-Yo IR1 Level 18.4 (estimated VO₂max 47.2 ml/kg/min). Above U17 tennis median. Repeat-sprint capacity supporting long-match endurance.

7Ankle Mobility

STRENGTH

Bilateral ankle dorsiflexion 38° R / 41° L — excellent. Critical for lateral movement, deep-knee shot prep, and impact attenuation on hard courts.

Lower Body Power Panel · VALD ForceDecks

Vertical force production & reactive strength.

Force-plate metrics measure how well an athlete generates and absorbs ground reaction force — the foundation of every explosive movement on the tennis court (lateral first-step, split-stance recovery, transfer into the serve). Tested on dual-plate VALD ForceDecks at 1000 Hz.

CMJ Jump Height

27 cm · P65

P10

P25

P50

P75

P90

Above peer median

RSI-Modified

0.34 · P67

P10

0.18

P25

0.24

P50

0.30

P75

0.36

P90

0.44

Above peer median

DJ-RSI

1.6 · P53

P10

0.80

P25

1.2

P50

1.6

P75

2.0

P90

2.5

Above peer median

IMTP Peak Force

1920 N · P56

P10

1300

P25

1550

P50

1850

P75

2150

P90

2500

Above peer median

Force-plate detail

Metric	Value	U17 Female Tennis Reference	Status
CMJ · Jump Height	27.4 cm	Median 25 cm · Top 10%: 33+ cm	Above median
CMJ · RSI-Modified	0.34	Median 0.30 · Top 10%: 0.44+	Above median
CMJ · Peak Power	2540 W	Median 2300 W · Top 10%: 3000+ W	Above median
CMJ · Relative Power	40.7 W/kg	Median 36 · Top 10%: 46+ W/kg	Above median
CMJ · L/R Takeoff Asymmetry	7.8 %	<10% = elite acceptable	Within elite range
Squat Jump · Height	24.8 cm	Median 22 cm	Above median
Drop Jump · RSI	1.65	Elite ≥2.0 · Median 1.6	On track
Drop Jump · Contact Time	215 ms	Target 180-220 ms	On target
Single-Leg Jump · Best L	11.4 cm	Median 12 cm	Below median
Single-Leg Jump · Best R	13.2 cm	Median 12 cm	Above median
SLJ · L/R Asymmetry	13.6 %	<15% acceptable for tennis	Monitor
SLHAR · L Contact Time	218 ms	Target 180-220 ms	On target
SLHAR · R Contact Time	196 ms	Target 180-220 ms	On target
Iso Mid-Thigh Pull · Peak Force	1920 N	Median 1850 N · Per kg: 30+ N/kg	Above median

Speed & Agility Panel · VALD SmartSpeed

Court coverage & change-of-direction.

Tennis points are decided in the first three steps. Sprint and change-of-direction times are the closest lab proxies for on-court first-step quickness, lateral cover speed, and recovery between shots. Tested with SmartSpeed timing gates.

5m Sprint

1.2 s · P58

P10

1.3

P25

1.2

P50

1.2

P75

1.1

P90

1.1

Above peer median

10m Sprint

1.9 s · P56

P10

2.1

P25

2.0

P50

2.0

P75

1.9

P90

1.8

Above peer median

20m Sprint

3.4 s · P53

P10

3.8

P25

3.5

P50

3.4

P75

3.2

P90

3.1

Above peer median

5-0-5 (dominant)

2.6 s · P55

P10

3.0

P25

2.8

P50

2.6

P75

2.5

P90

2.4

Above peer median

T-test

10 s · P62

P10

P25

P50

P75

P90

9.4

Above peer median

Speed/agility detail

Test	Value	U17 Female Tennis Reference	Status
5m Sprint (acceleration)	1.16 s	Median 1.18s · Top 10%: 1.06s	Above median
10m Sprint	1.94 s	Median 1.96s · Top 10%: 1.80s	Above median
20m Sprint (max velocity)	3.38 s	Median 3.40s · Top 10%: 3.10s	Above median
5-0-5 COD · Right turn (dominant)	2.62 s	Median 2.65s · Top 10%: 2.35s	On median
5-0-5 COD · Left turn	2.71 s	Median 2.65s · Top 10%: 2.35s	Slightly below dom
T-Test (multidirectional)	10.4 s	Median 10.8s · Top 10%: 9.4s	Above median
L vs R 5-0-5 Asymmetry	3.321033210332098 %	<5% = balanced	Balanced

Tennis-Specific Power · Med Ball & Grip

Power transfer through the kinetic chain.

Tennis power flows ground-up: legs → hip rotation → trunk → shoulder → racquet. Med-ball throws measure the rotational and overhead components of that chain. Grip strength is the final link — the connection between athlete and racquet — and a published predictor of late-set shot quality under fatigue.

Overhead Med Ball Throw (3kg)

7.9 m · P58

P10

5.0

P25

6.2

P50

7.5

P75

8.8

P90

Above peer median

Rotational Med Ball Throw (dom side, 3kg)

9.6 m · P64

P10

6.0

P25

7.4

P50

8.8

P75

P90

Above peer median

Grip Strength (dominant)

33 kg · P55

P10

P25

P50

P75

P90

Above peer median

Power detail (3kg med ball)

Test	Value	Tennis Reference	Status
Overhead Throw · 3kg (serve power proxy)	7.9 m	Median 7.5 m · Top 10%: 10+ m	Above median
Rotational Throw · Right (forehand side)	9.6 m	Median 8.8 m · Top 10%: 11.6+ m	Above median
Rotational Throw · Left (backhand side)	8.4 m	Median 8.8 m · Top 10%: 11.6+ m	Below dominant
Rotational Power L/R Asymmetry	12.499999999999993 %	<15% acceptable in tennis	Sport-acceptable
Grip Strength · Right (dominant)	33 kg	Median 32 kg · Top 10%: 42+ kg	Above median
Grip Strength · Left	28 kg	Median 30 kg	On median
Grip Asymmetry (R−L)	5 kg	Tennis players typically R+5–10 kg	Sport-natural

Isometric Strength Panel · VALD DynaMo

Joint-by-joint strength snapshot.

Handheld dynamometry of the joints most relevant to tennis: knees and hips (movement engine), and the shoulder complex (where the kinetic chain delivers force into the racquet). All values are peak isometric force in Newtons.

Lower body strength

Movement	Right (N)	Left (N)	Asymmetry	Status
Knee Extension (Quad)	318	304	4.4%	Balanced
Knee Flexion (Hamstring)	178	168	5.6%	Balanced
Hip Abduction	142	138	2.8%	Balanced

Upper body / serve mechanics

Movement	Right (N)	Left (N)	Asymmetry	Status
Shoulder External Rotation · DOMINANT WEAKER	86	104	17.3%	Priority focus
Shoulder Internal Rotation	148	132	10.8%	Monitor
Shoulder Scaption (Flexion)	124	132	6.1%	Balanced
ER:IR Ratio (dominant)	0.58		Below protective 0.66 threshold

Why this matters for a tennis serve

Dominant-side shoulder ER strength is the #1 priority finding.

The serve loads the dominant shoulder eccentrically through the deceleration phase — and external rotation strength is the brake. When ER strength is low and ER:IR ratio falls below 0.66 (per Ellenbecker & Davies tennis-shoulder framework), the rotator cuff is at increased risk for tendinopathy and impingement under high-volume serving. [ATHLETE NAME REDACTED]'s ER:IR ratio on the dominant side is 0.58. We have a clear corrective program: prone external rotation, side-lying ER, scapular Y/T/W, and 90/90 ER cable holds — 3× weekly, 6-week reassessment.

Mobility & Movement Screen

Range-of-motion across tennis-relevant joints.

Tennis is a sport of asymmetric loading. Years of dominant-side serves and one-handed groundstrokes can produce predictable mobility deficits — most notably "GIRD" (glenohumeral internal rotation deficit) on the serving shoulder. Goniometer measurements; bilateral comparison.

Joint · Movement	Right (°)	Left (°)	Asymmetry	Note
Shoulder Internal Rotation	58°	76°	18°	GIRD pattern (dominant deficit) — common in tennis
Shoulder External Rotation	95°	88°	7°	Adequate ROM bilaterally
Hip Internal Rotation	36°	40°	4°	Within normal range
Ankle Dorsiflexion	38°	41°	3°	Excellent — supports lateral movement
Trunk Rotation	64°	58°	6°	Slight dominant-side advantage (sport-natural)

Symmetry & Injury Risk Audit

Left vs. Right — the injury-risk lens.

Tennis players naturally develop some lateral dominance (Sanchis-Moysi 2010). The line is between sport-shaped asymmetry and injury-risk asymmetry. Below: the bilateral metrics from this evaluation, with concern thresholds based on published tennis sport-medicine guidelines.

CMJ · Peak Takeoff Force

Asymmetry: 7.8%

Bilateral countermovement jump

L · 758.0 N

822.0 N · R

Right dominant

Single-Leg Jump · Best Height

Asymmetry: 13.6%

Per-leg single-leg jump

L · 11.4 cm

13.2 cm · R

Right dominant

SLHAR · Contact Time

Asymmetry: 10.1%

Reactive ground contact (lower = better)

L · 218.0 ms

196.0 ms · R

Left dominant

Knee Extension (Quad) Force

Asymmetry: 4.4%

Isometric quad strength

L · 304.0 N

318.0 N · R

Right dominant

Knee Flexion (Hamstring) Force

Asymmetry: 5.6%

Isometric hamstring strength

L · 168.0 N

178.0 N · R

Right dominant

Shoulder External Rotation

Asymmetry: 17.3%

Critical for serve deceleration — dominant should match or exceed non-dominant

L · 104.0 N

86.0 N · R

Left dominant

Rotational Power (3kg)

Asymmetry: 12.5%

Forehand vs. backhand power

L · 8.4 m

9.6 m · R

Right dominant

Grip Strength

Asymmetry: 15.2%

Dominant typically +5–10 kg

L · 28.0 kg

33.0 kg · R

Right dominant

Tennis-Specific Conditioning · Yo-Yo IR1

Repeat-explosive aerobic capacity.

Yo-Yo Intermittent Recovery Test Level 1 is the published gold standard for testing repeat-sprint aerobic capacity in court sports — the most tennis-relevant cardio test. Maps closely to the demand pattern of a long match.

Yo-Yo IR1 Level

18 · P64

P10

P25

P50

P75

P90

Above peer median

Serve Velocity (1st serve)

132 km/h · P54

P10

105

P25

118

P50

130

P75

142

P90

155

Above peer median

Conditioning & performance detail

Test	Value	Reference	Status
Yo-Yo IR1 · Level Reached	18.4	Median 17.0 · Top 10%: 22.0	Above median
Yo-Yo IR1 · Total Distance	1320 m	U17 female tennis median ~1100 m	Above median
VO₂max (estimated from Yo-Yo)	47.2 ml/kg/min	U17 female tennis: 42–48 typical	Top of range
Serve Velocity · 1st Serve Mean	132 km/h	Median 130 km/h · WTA Pro: 165+ km/h	On U17 median
1st Serve Consistency (in)	64 %	Junior target: 60-70% · WTA: 60-65%	On target

Coach Recommendations · Next 8–12 Week Block

Specific programming priorities.

Direct outputs from this evaluation. Priorities are graded action-item / opportunity / maintain. Each item maps to a specific protocol your trainer will program into upcoming sessions.

PRIORITY · ACTION ITEM

Dominant-side shoulder ER strength & mobility

Two coordinated interventions: (1) ER strength — prone ER (3×10 each, light DB), 90/90 cable ER hold (3×20s), Y/T/W band complex 3× weekly. (2) IR mobility — sleeper stretch + cross-body stretch daily (2×30s). 6-week retest: target ER:IR ratio ≥0.65 and IR ROM gap closed to <10°. This is the #1 injury-prevention item in this report.

PRIORITY · ACTION ITEM

Single-leg power & left-side bias

SLJ asymmetry at 13.6% (R-dominant) and left-leg SLJ below median. Target: 2× weekly Bulgarian split-squats prioritizing left leg (3×8, 1.25× R-side load), single-leg RDLs, lateral bounds, skater jumps. 8-week target: SLJ asymmetry <10% and left SLJ above 13 cm.

OPPORTUNITY

Reactive strength progression (DJ-RSI)

DJ-RSI of 1.65 sits between "developing" and "elite acceptable." Add weekly pogo-hop and ankle-stiffness work, low-amplitude depth jumps progressing toward 30cm box height. 12-week target: DJ-RSI ≥2.0 (elite threshold).

OPPORTUNITY

Backhand-side rotational power

Rotational throw asymmetry of 12% favoring forehand side. Add cable woodchops and Pallof-style anti-rotation work prioritizing backhand-direction concentric loading. Improves two-handed backhand depth and cross-court power.

MAINTAIN

Linear speed & aerobic base

10m sprint and Yo-Yo IR1 results both sit above U17 junior median. Continue current programming: 1× weekly accel mechanics + 1× weekly tennis-specific repeat-sprint conditioning (e.g., 6×30s on / 30s off, multidirectional). No new stimulus needed in this block.

MAINTAIN

Vertical power foundation

CMJ at 27.4 cm and IMTP at 1920 N both above median. Continue current trap-bar deadlift and jump-squat block. Re-test every 8 weeks to keep the loop tight.

What Comes Next · Program Structure

Your testing & reporting cadence.

This evaluation is the snapshot. The Catalyst Tennis Performance Program is the system around it.

Component	Cadence	What's Included
Full Performance Evaluation	Every 12 weeks	Force-plate, DynaMo, SmartSpeed, med ball, mobility, conditioning. Delivered as this dossier.
Targeted Re-test (priority items)	Every 6 weeks	Focused re-test of any "priority" findings (e.g., shoulder ER, single-leg asymmetry) to track corrective response.
Performance Training	2× / week	Programming built around evaluation findings. Each block has clear targets tied to next retest.
Mid-block Check-in	Week 4 of each block	15-minute movement screen + symptom check. Adjusts programming if anything has shifted.
Match-Performance Review (optional)	Quarterly	Heart-rate / on-court intensity data from match play (requires HR monitor). Adds context to lab data.

Next steps for [ATHLETE NAME REDACTED]

Week 1–2: Begin shoulder ER + IR mobility program (priority #1)
Week 1 onward: Single-leg programming integrated into 2× weekly S&C
Week 6: Targeted re-test — shoulder DynaMo + SLJ + ROM (30 min)
Week 12: Full evaluation re-test — fresh dossier delivered

Methods. All force data captured on VALD ForceDecks (dual-plate, 1000 Hz force sampling). Isometric strength data from VALD DynaMo handheld dynamometer. Speed and agility timing via SmartSpeed gates. Med ball throws measured at landing point (3kg ball). Mobility goniometer measurements taken in standardized positions. Yo-Yo IR1 conducted on indoor surface with audio cadence per Bangsbo protocol. Serve velocity captured by radar at 12m line, mean of 10 1st serves.

Reference data sources. Tier benchmarks (ITF Junior, NCAA D1, WTA Pro, WTA Top 100) and U15–U17 female tennis percentile cut-offs (P10–P90) synthesized from Söğüt 2019, Ulbricht 2016, Fett 2017, Roetert & Ellenbecker (USTA Sport Science Protocols), Kovacs & Ellenbecker, Sanchis-Moysi 2010, Ellenbecker & Davies (tennis-shoulder framework), Bangsbo Yo-Yo IR1 standards, and USTA Player Development reference ranges.

About this report. Quarterly Performance Assessment delivered as part of the Catalyst Tennis Performance Program. Generated April 17, 2026. Catalyst Performance & Training · San Diego, CA · Report ID TNS-2026-Q2-0184.

SAMPLE REPORT NOTICE. This document is a sample evaluation; athlete identifying information has been redacted for privacy. Test methodology, normative reference ranges, and analytical framework are identical to those used in our active client deliverables.

Tennis AthletePerformance Evaluation

Solid junior-tier athlete with two clear focus areas.

Where to look on the body — at a glance.

Vertical force production & reactive strength.

Force-plate detail

Court coverage & change-of-direction.

Speed/agility detail

Power transfer through the kinetic chain.

Power detail (3kg med ball)

Joint-by-joint strength snapshot.

Lower body strength

Upper body / serve mechanics

Range-of-motion across tennis-relevant joints.

Left vs. Right — the injury-risk lens.

CMJ · Peak Takeoff Force

Single-Leg Jump · Best Height

SLHAR · Contact Time

Knee Extension (Quad) Force

Knee Flexion (Hamstring) Force

Shoulder External Rotation

Rotational Power (3kg)

Grip Strength

Repeat-explosive aerobic capacity.

Conditioning & performance detail

Specific programming priorities.

Your testing & reporting cadence.

Tennis Athlete
Performance Evaluation