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Ethan Jefferson – Player Evaluation Report – TopVelocity.ai
Ethan Jefferson

Ethan Jefferson

USA 14 years old Born Aug 28, 2011 Eval: Dec 27, 2025
RHP TopVelocity Evaluation
70
Velocity
5'11"
Height
180
Weight
🤖

AI Velocity Analysis

Machine learning prediction based on 1,535 elite athletes

Camp Velocity
70
mph
AI Prediction
73
mph
Based on physical metrics
Difference
3.3
mph
Below prediction
Proficiency
23
%ile
Mechanics efficiency
💡
What this means: Needs work - large gap between potential and performance
There's potential to gain 3.3 mph through improved mechanics and training.

💪 Athletic Variables to Improve

Physical metrics that directly impact velocity. Focus on these for maximum gains.

Broad Jump +2.1 mph
Current 94.0" 37%ile
Goal 100.0" 67%ile
Vertical Jump 225 +1.8 mph
Current 16.0" 17%ile
Goal 19.0" 47%ile
Right Grip +1.8 mph
Current 92.0 lbs 24%ile
Goal 110.0 lbs 54%ile
Left Grip +1.8 mph
Current 91.0 lbs 26%ile
Goal 105.8 lbs 56%ile
Vertical Jump +1.8 mph
Current 24.0" 29%ile
Goal 26.0" 59%ile
10-Yard Sprint +1.5 mph
Current 1.970s 2%ile
Goal 1.710s 32%ile
Weight +1.5 mph
Current 180.0 lbs 48%ile
Goal 202.2 lbs 78%ile
Total Body Strength +1.4 mph
Current 350.0 lbs 27%ile
Goal 415.0 lbs 57%ile

🎯 Biomechanic Variables to Improve

Motion capture metrics from your throwing mechanics analysis.

Trunk Rotation Speed @ FFS +1.9 mph
Current 373.0°/s 14%ile
Goal 755.6°/s 44%ile
Pelvis Rotation Speed @ FFS +1.7 mph
Current 428.0°/s 39%ile
Goal 573.1°/s 69%ile
Trunk Flexion @ Ball Release +1.3 mph
Current 28.0° 45%ile
Goal 37.1° 75%ile
Arm External Rotation @ MER +1.2 mph
Current 158.0° 35%ile
Goal 170.9° 65%ile
Arm Rotation Speed @ MER +1.1 mph
Current 395.0°/s 22%ile
Goal 583.8°/s 52%ile
Arm External Rotation @ FFS +1.0 mph
Current 70.0° 38%ile
Goal 85.2° 68%ile
Total Potential Velocity Gain: +21.9 mph → Target: 90 mph
✓ Target of 90 mph is achievable!
You need +20.0 mph to reach your target.
Improving to 90th percentile in the metrics above can provide +21.9 mph.
🎖️

TopVelocity Ranking

Based on the TopVelocity Evaluation System

Current Rank
Unranked
Youth Level 3 3/16 metrics
Youth Level 2 4/16 metrics
Youth Level 1 7/16 metrics
Vertical Jump 24.0 / ≥17.0
Broad Jump 94.0 / ≥72.0
10 Yard Sprint 2.0 / ≤2.1
Total Body Strength 350.0 / ≥200.0
Right Hip Internal Rotation 10.0 / ≥30.0
Left Hip Internal Rotation 15.0 / ≥30.0
Right Hip Extension 15.0 / ≥15.0
Left Hip Extension 10.0 / ≥15.0
Right Hip Flexion 60.0 / ≥80.0
Left Hip Flexion 60.0 / ≥80.0
Right Hip Abduction 35.0 / ≥45.0
Left Hip Abduction 45.0 / ≥45.0
Right Trunk Rotation 35.0 / ≥65.0
Left Trunk Rotation 30.0 / ≥65.0
Right Dorsiflexion 10.0 / ≥10.0
Left Dorsiflexion 5.0 / ≥10.0
📊 Performance Scores (Percentile)
🔄
23
Mobility
💪
35
Shoulder
36
Power
⚖️
5
Balance
🎯
41
Mechanics
🏆
28
Overall
📏

Anthropometric

3 metrics measured

39
Overall
70.5 in
in
Body Height
31th Percentile
Elite (90th): 75.0 in
Difference: -4.5 in
180 lbs
lbs
Body Weight
47th Percentile
Elite (90th): 216 lbs
Difference: -36 lbs
70.5 in
in
Wing Span
37th Percentile
Elite (90th): 76.0 in
Difference: -5.5 in
🔄

Mobility

23 metrics measured

23
Overall
10 °
°
Right Dorsiflexion
50th Percentile
Elite (90th): 19 °
Difference: -9 °
5 °
°
Left Dorsiflexion
5th Percentile
Elite (90th): 18 °
Difference: -13 °
60 °
°
Right Plantar Flexion
50th Percentile
Elite (90th): 75 °
Difference: -15 °
60 °
°
Left Plantar Flexion
50th Percentile
Elite (90th): 75 °
Difference: -15 °
10 °
°
Right Hip Internal Rotation
3th Percentile
Elite (90th): 40 °
Difference: -30 °
15 °
°
Left Hip Internal Rotation
5th Percentile
Elite (90th): 40 °
Difference: -25 °
40 °
°
Right Hip External Rotation
50th Percentile
Elite (90th): 54 °
Difference: -14 °
20 °
°
Left Hip External Rotation
3th Percentile
Elite (90th): 50 °
Difference: -30 °
15 °
°
Right Hip Extension
25th Percentile
Elite (90th): 25 °
Difference: -10 °
10 °
°
Left Hip Extension
5th Percentile
Elite (90th): 25 °
Difference: -15 °
60 °
°
Right Hip Flexion
5th Percentile
Elite (90th): 95 °
Difference: -35 °
60 °
°
Left Hip Flexion
5th Percentile
Elite (90th): 95 °
Difference: -35 °
35 °
°
Right Hip Abduction
5th Percentile
Elite (90th): 51 °
Difference: -16 °
45 °
°
Left Hip Abduction
50th Percentile
Elite (90th): 52 °
Difference: -7 °
50 °
°
Right Shoulder Internal Rotation
54th Percentile
Elite (90th): 70 °
Difference: -20 °
33 °
°
Left Shoulder Internal Rotation
10th Percentile
Elite (90th): 80 °
Difference: -47 °
103 °
°
Right Shoulder External Rotation
45th Percentile
Elite (90th): 120 °
Difference: -17 °
90 °
°
Left Shoulder External Rotation
25th Percentile
Elite (90th): 115 °
Difference: -25 °
20 °
°
Right Shoulder Horizontal Abduction
10th Percentile
Elite (90th): 35 °
Difference: -15 °
20 °
°
Left Shoulder Horizontal Abduction
10th Percentile
Elite (90th): 35 °
Difference: -15 °
40 °
°
Trunk Extension
59th Percentile
Elite (90th): 50 °
Difference: -10 °
35 °
°
Right Trunk Rotation
3th Percentile
Elite (90th): 75 °
Difference: -40 °
30 °
°
Left Trunk Rotation
3th Percentile
Elite (90th): 70 °
Difference: -40 °
💪

Strength & Power

11 metrics measured

36
Overall
24.0 in
in
Vertical Jump
37th Percentile
Elite (90th): 30.0 in
Difference: -6.0 in
16.0 in
in
Vertical Jump 225lbs
20th Percentile
Elite (90th): 24.3 in
Difference: -8.3 in
94 in
in
Broad Jump
43th Percentile
Elite (90th): 108 in
Difference: -14 in
82 in
in
Right Lateral Broad Jump
75th Percentile
Elite (90th): 86 in
Difference: -4 in
80 in
in
Left Lateral Broad Jump
62th Percentile
Elite (90th): 86 in
Difference: -6 in
1.970 s
s
10 Yard Sprint
6th Percentile
Elite (90th): 1.880 s
Difference: +0.090 s
350 lbs
lbs
Total Body Strength
25th Percentile
Elite (90th): 600 lbs
Difference: -250 lbs
92 lbs
lbs
Right Grip Strength
22th Percentile
Elite (90th): 130 lbs
Difference: -38 lbs
91 lbs
lbs
Left Grip Strength
26th Percentile
Elite (90th): 130 lbs
Difference: -39 lbs
484 W
W
Right Rotational Power
22th Percentile
Elite (90th): 973 W
Difference: -489 W
588 W
W
Left Rotational Power
50th Percentile
Elite (90th): 909 W
Difference: -321 W
⚖️

Balance

6 metrics measured

5
Overall
19 in
in
Right Y-Balance 1
5th Percentile
Elite (90th): 36 in
Difference: -17 in
21 in
in
Right Y-Balance 2
4th Percentile
Elite (90th): 47 in
Difference: -26 in
24 in
in
Right Y-Balance 3
5th Percentile
Elite (90th): 46 in
Difference: -22 in
20 in
in
Left Y-Balance 1
7th Percentile
Elite (90th): 37 in
Difference: -17 in
24 in
in
Left Y-Balance 2
4th Percentile
Elite (90th): 46 in
Difference: -22 in
21 in
in
Left Y-Balance 3
4th Percentile
Elite (90th): 47 in
Difference: -26 in
🎯

Shoulder Strength

4 metrics measured

35
Overall
176 °
°
Right Shoulder Flexion
20th Percentile
Elite (90th): 209 °
Difference: -33 °
37 lbs
lbs
Right Shoulder Internal Rotation Strength
46th Percentile
Elite (90th): 55 lbs
Difference: -18 lbs
30 lbs
lbs
Right Shoulder External Rotation Strength
34th Percentile
Elite (90th): 49 lbs
Difference: -19 lbs
25 lbs
lbs
Scaption Right Back
40th Percentile
Elite (90th): 36 lbs
Difference: -11 lbs
⚙️

Mechanics

15 metrics measured

41
Overall
7 °
°
Hip Shoulder Separation Before Leg Drive
41th Percentile
Elite (90th): 21 °
Difference: -14 °
22 °
°
Trunk Flexion Before Leg Drive
25th Percentile
Elite (90th): 32 °
Difference: -10 °
57 °
°
Drive Knee Extension Before Leg Drive
33th Percentile
Elite (90th): 70 °
Difference: -13 °
51 °
°
Left Knee Flexion Front Foot Strike
60th Percentile
Elite (90th): 58 °
Difference: -7 °
70 °
°
Dominate Arm External Rotation Front Foot Strike
43th Percentile
Elite (90th): 97 °
Difference: -27 °
28 °
°
Dominate Arm Shoulder Abduction Front Foot Strike
33th Percentile
Elite (90th): 45 °
Difference: -17 °
428 °/s
°/s
Pelvis Rotation Speed Front Foot Strike
37th Percentile
Elite (90th): 673 °/s
Difference: -245 °/s
373 °/s
°/s
Trunk Rotation Speed Front Foot Strike
23th Percentile
Elite (90th): 756 °/s
Difference: -383 °/s
158 °
°
Dominate Arm External Rotation Maximum External Rotation
40th Percentile
Elite (90th): 184 °
Difference: -26 °
-1 °
°
Dominate Arm Shoulder Abduction Maximum External Rotation
54th Percentile
Elite (90th): 9 °
Difference: -10 °
395 °/s
°/s
Dominate Arm External Rotation Speed Maximum External Rotation
34th Percentile
Elite (90th): 1238 °/s
Difference: -842 °/s
28 °
°
Trunk Flexion Ball Release
46th Percentile
Elite (90th): 42 °
Difference: -14 °
99 °
°
Dominate Arm Shoulder Abduction Ball Release
68th Percentile
Elite (90th): 105 °
Difference: -6 °
-11 °
°
Dominate Arm Shoulder Horizontal Abduction Ball Release
62th Percentile
Elite (90th): -2 °
Difference: -9 °
31 °
°
Dominate Arm Extension Ball Release
12th Percentile
Elite (90th): 70 °
Difference: -39 °

Pitch Metrics

4 metrics measured

51
Overall
18 in
in
Vertical Break
75th Percentile
Elite (90th): 20 in
Difference: -2 in
14 in
in
Horizontal Break
90th Percentile
Elite (90th): 14 in
Difference: ✓ Elite
1678 rpm
rpm
Total Spin
22th Percentile
Elite (90th): 2178 rpm
Difference: -500 rpm
70 mph
mph
Total Velocity
15th Percentile
Elite (90th): 86 mph
Difference: -16 mph
🎯

Brent Pourciau's Analysis

Road to 90

Personalized roadmap for Ethan Jefferson

📊 The Overview
Alright Ethan, here's your Road to 90. You're currently sitting at 70 mph, which means you need about 20.0 mph to hit your target of 90. You're early in your development journey at the 28th percentile. At this stage, almost everything you work on will help — mobility, strength, power, and motor control all move the needle.
🤖 What The AI Analysis Tells Me
Ethan, let me be real with you — this is actually exciting news. You're throwing 70 mph, but based on your physical metrics, the AI model says you should be around 73.3 mph. That 3.3 mph gap? That's not a problem — that's POTENTIAL. It means once we clean up your mechanics and movement patterns, you've got velocity sitting there waiting to be unlocked.
Your mechanics efficiency is at the 23th percentile — and honestly, this is where the opportunity is. Your physical tools are there, but your delivery isn't converting them efficiently. The good news? Mechanical improvements often come faster than physical gains. Once we optimize your sequencing and timing, you'll see immediate velocity jumps.
🎯 Your Biggest Opportunities
Based on the AI analysis, here are your biggest opportunities to add velocity:
Broad Jump +2.1 mph
Current: 94.0" (37th %ile) Target: 100.0" (67th %ile)
Why it matters: Your broad jump is one of the best predictors of pitching velocity because it measures your ability to produce horizontal force — exactly what you need off the mound.
How we fix it: The Stride Excelerator is perfect for this — it trains the exact horizontal force production pattern you use in your delivery. Combine that with plyometrics, bounds, and the TopVelocity Sled for resisted stride work.
Vertical Jump 225 +1.8 mph
Current: 16.0" (17th %ile) Target: 19.0" (47th %ile)
Why it matters: This metric has a direct correlation to pitching velocity based on our data from over 800 athletes.
How we fix it: The 3X Pitching Velocity Program includes specific protocols to target this. Combined with the TopVelocity training devices, you'll see improvement quickly.
Right Grip Strength +1.8 mph
Current: 92.0 lbs (24th %ile) Target: 110.0 lbs (54th %ile)
Why it matters: Grip strength is the end of the kinetic chain. All that force you generate has to transfer through your hand to the ball.
How we fix it: Farmer carries, dead hangs, wrist work, and specific grip training in the 3X Program. This also helps with spin rate and command.
These three priorities alone = +5.7 mph potential
⚙️ The Mechanical Side
The AI also identified some mechanical variables from your motion capture data. There's about +8.2 mph worth of mechanical improvements available. These are things like trunk rotation speed, pelvis rotation, and arm timing — exactly what the 3X Pitching Velocity Program is designed to fix. The Trunk Excelerator specifically trains that rotational sequencing, and the Stride Excelerator grooves the lower half mechanics. This is where the real velocity unlocks.
🏆 Can You Hit Your Target?
Here's the best part — the math works. You need +20.0 mph to hit 90, and the improvements above give you +21.9 mph of potential. This is achievable. It's not going to happen overnight, but if you commit to the training and stay consistent, 90 mph is absolutely in reach.
🚀 My Recommendation
Based on everything I'm seeing here, here's what I recommend: The 3X Pitching Velocity Program is exactly what you need. This isn't just a throwing program — it's a complete system that addresses mechanics, strength, power, and motor learning all in one. Your mechanics efficiency score tells me there's velocity sitting on the table right now. The 3X Program will teach you how to sequence your body properly and transfer all that force into the ball. To accelerate your results, I highly recommend using the TopVelocity training devices that are built into the program: The Trunk Excelerator teaches you to generate and transfer rotational power through your core — this is where velocity lives. The Stride Excelerator builds explosive leg drive and proper stride mechanics, which is the foundation of the 3X approach. The Impulse Ground Force Trainer develops your ability to create force into the ground, and the TopVelocity Sled builds the specific strength patterns you need for a powerful delivery. These aren't gimmicks — they're tools designed to train the exact movement patterns that separate high-velocity pitchers from everyone else. Combine them with the 3X Program and you'll see results faster than training alone.
💪 Your Top Physical Priorities
The two biggest physical drivers for you right now are broad jump and Body Height. Together, these account for about 1.0 mph of your velocity gap.
Broad Jump +0.8 mph
Current 94 in
Percentile 44th
Target 102 in
To Gain +8 in
Body Height +0.2 mph
Current 70.5 in
Percentile 31th
Target 72.8 in
To Gain +2.3 in
🔧 Supporting Work
After that, it's about the supporting package: left ankle dorsiflexion, Left Hip Abduction (mobility), Left Lateral Broad Jump, Left Grip Strength (power/stability). These aren't the headline levers, but they raise the floor and make your mechanics easier to execute.
⚙️ Mechanical Focus
Mechanically, the key focus is Dominate Arm External Rotation Front Foot Strike and Dominate Arm External Rotation Maximum External Rotation. Most of the energy to the ball comes through the trunk, so trunk acceleration and sequencing are the big rocks to move.
Dominate Arm External Rotation Front Foot Strike +0.1 mph
Current Percentile 44th
🎯 Your Action Plan
Movement Cues:
"Shin down, leverage, drive — use the ground."
Training Priorities:
Build Mass
Calorie surplus + structured strength phases. Mass equals gas — you need more raw material.
Explosive Power
Jump training (box jumps, bounds) + Olympic lift progressions (cleans, hang cleans). Train fast to be fast.
Mobility & Stability
Daily mobility work (hips, ankles, t-spine) + longer holds. Add single-leg stability for pelvic control.
🚀 What's Next
At your age, development is rapid and everything helps. Train consistently across all areas — as your profile climbs, the plan will become more specific. Re-test every 3-4 months to track your progress.

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Achievement Milestones

Evaluated
🎖 Ranked
80+ MPH
🔥 85+ MPH
💪 90+ Club
🏆 Pro Level