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Calvin Nelms – Player Evaluation Report – TopVelocity.ai
Calvin Nelms

Calvin Nelms

USA 17 years old Born Feb 1, 2009 Eval: Jun 10, 2023
LHP TopVelocity Evaluation
71
Velocity
5'8"
Height
142
Weight
🤖

AI Velocity Analysis

Machine learning prediction based on 1,535 elite athletes

Camp Velocity
71
mph
AI Prediction
68
mph
Based on physical metrics
Difference
+2.5
mph
Above prediction
Proficiency
69
%ile
Mechanics efficiency
💡
What this means: Good mechanics - room for improvement
You're throwing 2.5 mph faster than athletes with similar physical profiles — great mechanics!

💪 Athletic Variables to Improve

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

Broad Jump +2.1 mph
Current 90.0" 26%ile
Goal 98.0" 56%ile
Lateral Broad Jump (Combined) +2.0 mph
Current 160.0" 60%ile
Goal 174.0" 90%ile
Vertical Jump +1.8 mph
Current 25.0" 40%ile
Goal 27.0" 70%ile
10-Yard Sprint +1.5 mph
Current 1.900s 4%ile
Goal 1.700s 34%ile
Weight +1.5 mph
Current 142.0 lbs 10%ile
Goal 173.6 lbs 40%ile
Total Body Strength +1.4 mph
Current 310.0 lbs 15%ile
Goal 390.0 lbs 45%ile
Rotation Power (R) +0.6 mph
Current 478.0w 27%ile
Goal 621.8w 57%ile
Trunk Rotation (Combined) +0.5 mph
Current 120.0° 39%ile
Goal 130.0° 69%ile

🎯 Biomechanic Variables to Improve

Motion capture metrics from your throwing mechanics analysis.

Trunk Rotation Speed @ FFS +1.9 mph
Current 483.0°/s 33%ile
Goal 584.1°/s 63%ile
Trunk Flexion @ Ball Release +1.0 mph
Current 38.0° 72%ile
Goal 43.6° 95%ile
Arm External Rotation @ FFS +0.9 mph
Current 89.0° 69%ile
Goal 99.8° 95%ile
Shoulder Abduction @ MER +0.7 mph
Current -2.0° 32%ile
Goal 1.3° 62%ile
Shoulder Abduction @ FFS +0.6 mph
Current 23.0° 21%ile
Goal 32.4° 51%ile
Arm Extension @ Ball Release +0.5 mph
Current 42.0° 27%ile
Goal 49.4° 57%ile
Total Potential Velocity Gain: +17.0 mph → Target: 90 mph
Working Toward 90 mph
You need +19.0 mph to reach your target.
Improving to 90th percentile in the metrics above can provide +17.0 mph.
2.0 mph gap remaining
This small gap can likely be closed with continued development.
🎖️

TopVelocity Ranking

Based on the TopVelocity Evaluation System

Current Rank
Unranked
Youth Level 3 10/20 metrics
Youth Level 2 18/20 metrics
Youth Level 1 18/20 metrics
Vertical Jump 25.0 / ≥17.0
Broad Jump 90.0 / ≥72.0
10 Yard Sprint 1.9 / ≤2.1
Total Body Strength 310.0 / ≥200.0
Right Hip Internal Rotation 50.0 / ≥30.0
Left Hip Internal Rotation 45.0 / ≥30.0
Right Hip Extension 25.0 / ≥15.0
Left Hip Extension 25.0 / ≥15.0
Right Hip Flexion 95.0 / ≥80.0
Left Hip Flexion 95.0 / ≥80.0
Right Hip Abduction 50.0 / ≥45.0
Left Hip Abduction 50.0 / ≥45.0
Right Trunk Rotation 60.0 / ≥65.0
Left Trunk Rotation 60.0 / ≥65.0
Right Dorsiflexion 20.0 / ≥10.0
Left Dorsiflexion 20.0 / ≥10.0
📊 Performance Scores (Percentile)
🔄
79
Mobility
💪
32
Shoulder
37
Power
🏆
49
Overall
📏

Anthropometric

2 metrics measured

12
Overall
68.0 in
in
Body Height
13th Percentile
Elite (90th): 75.0 in
Difference: -7.0 in
142 lbs
lbs
Body Weight
10th Percentile
Elite (90th): 216 lbs
Difference: -74 lbs
🔄

Mobility

21 metrics measured

79
Overall
20 °
°
Right Dorsiflexion
95th Percentile
Elite (90th): 19 °
Difference: ✓ Elite
20 °
°
Left Dorsiflexion
95th Percentile
Elite (90th): 18 °
Difference: ✓ Elite
65 °
°
Right Plantar Flexion
62th Percentile
Elite (90th): 75 °
Difference: -10 °
65 °
°
Left Plantar Flexion
75th Percentile
Elite (90th): 75 °
Difference: -10 °
50 °
°
Right Hip Internal Rotation
95th Percentile
Elite (90th): 40 °
Difference: ✓ Elite
45 °
°
Left Hip Internal Rotation
95th Percentile
Elite (90th): 40 °
Difference: ✓ Elite
55 °
°
Right Hip External Rotation
95th Percentile
Elite (90th): 54 °
Difference: ✓ Elite
65 °
°
Left Hip External Rotation
96th Percentile
Elite (90th): 50 °
Difference: ✓ Elite
25 °
°
Right Hip Extension
90th Percentile
Elite (90th): 25 °
Difference: ✓ Elite
25 °
°
Left Hip Extension
90th Percentile
Elite (90th): 25 °
Difference: ✓ Elite
95 °
°
Right Hip Flexion
90th Percentile
Elite (90th): 95 °
Difference: ✓ Elite
95 °
°
Left Hip Flexion
90th Percentile
Elite (90th): 95 °
Difference: ✓ Elite
50 °
°
Right Hip Abduction
75th Percentile
Elite (90th): 51 °
Difference: -1 °
50 °
°
Left Hip Abduction
75th Percentile
Elite (90th): 52 °
Difference: -2 °
75 °
°
Right Shoulder Internal Rotation
92th Percentile
Elite (90th): 70 °
Difference: ✓ Elite
75 °
°
Left Shoulder Internal Rotation
85th Percentile
Elite (90th): 80 °
Difference: -5 °
105 °
°
Right Shoulder External Rotation
50th Percentile
Elite (90th): 120 °
Difference: -15 °
90 °
°
Left Shoulder External Rotation
25th Percentile
Elite (90th): 115 °
Difference: -25 °
55 °
°
Trunk Extension
95th Percentile
Elite (90th): 50 °
Difference: ✓ Elite
60 °
°
Right Trunk Rotation
50th Percentile
Elite (90th): 75 °
Difference: -15 °
60 °
°
Left Trunk Rotation
50th Percentile
Elite (90th): 70 °
Difference: -10 °
💪

Strength & Power

6 metrics measured

37
Overall
25.0 in
in
Vertical Jump
50th Percentile
Elite (90th): 30.0 in
Difference: -5.0 in
90 in
in
Broad Jump
31th Percentile
Elite (90th): 108 in
Difference: -18 in
1.900 s
s
10 Yard Sprint
6th Percentile
Elite (90th): 1.880 s
Difference: +0.020 s
310 lbs
lbs
Total Body Strength
16th Percentile
Elite (90th): 600 lbs
Difference: -290 lbs
478 W
W
Right Rotational Power
22th Percentile
Elite (90th): 973 W
Difference: -495 W
977 W
W
Left Rotational Power
93th Percentile
Elite (90th): 909 W
Difference: ✓ Elite
🎯

Shoulder Strength

3 metrics measured

32
Overall
194 °
°
Left Shoulder Flexion
60th Percentile
Elite (90th): 211 °
Difference: -17 °
32 lbs
lbs
Left Shoulder Internal Rotation Strength
25th Percentile
Elite (90th): 56 lbs
Difference: -24 lbs
20 lbs
lbs
Left Shoulder External Rotation Strength
8th Percentile
Elite (90th): 49 lbs
Difference: -29 lbs

Pitch Metrics

1 metrics measured

18
Overall
71 mph
mph
Total Velocity
17th Percentile
Elite (90th): 86 mph
Difference: -15 mph
🎯

Brent Pourciau's Analysis

Road to 90

Personalized roadmap for Calvin Nelms

📊 The Overview
Alright Calvin, here's your Road to 90. You're currently sitting at 71 mph, which means you need about 19.0 mph to hit your target of 90. Your profile is in the 49th percentile overall, which means there's significant room to grow. The good news? Every improvement you make will translate to velocity.
🤖 What The AI Analysis Tells Me
Calvin, let me break this down for you. You're sitting at 71 mph right now, and our AI model — which has analyzed over 800 elite athletes — predicted 68.5 mph based on your physical metrics. You're actually beating that prediction by 2.5 mph. That means your mechanics are doing their job. You're not leaving velocity on the table from inefficiency.
Your mechanics efficiency is at the 69th percentile — that's solid, right around average for our database. You're neither leaving a ton on the table nor maximizing everything. This is a good sign because it means improvements in BOTH your physical profile AND your mechanics will translate to velocity.
🎯 Your Biggest Opportunities
Based on the AI analysis, here are your biggest opportunities to add velocity:
Broad Jump +2.1 mph
Current: 90.0" (26th %ile) Target: 98.0" (56th %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.
Lateral Broad Jump +2.0 mph
Current: 160.0" (60th %ile) Target: 174.0" (90th %ile)
Why it matters: This measures your lateral power — critical because pitching involves a massive lateral push off the rubber before you rotate.
How we fix it: The Stride Excelerator trains this lateral drive pattern specifically. Combine it with lateral bounds and the TopVelocity Sled for lateral resisted work.
Vertical Jump +1.8 mph
Current: 25.0" (40th %ile) Target: 27.0" (70th %ile)
Why it matters: Vertical jump measures your explosive power — your ability to generate force quickly. This directly translates to how hard you can drive off the rubber.
How we fix it: The Impulse Ground Force Trainer develops your ability to create force into the ground explosively. Pair it with box jumps, depth jumps, and Olympic lift variations in the 3X Program.
These three priorities alone = +5.9 mph potential
⚙️ The Mechanical Side
The AI also identified some mechanical variables from your motion capture data. There's about +5.6 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?
Let me be honest with you — getting to 90 mph is a big goal. The improvements I've outlined give you about +17.0 mph, which would put you around 88 mph. That's a great interim target. The remaining 2.0 mph gap can be closed through consistent training, mechanical refinement, and maturation. It's going to take time and work, but it's doable.
🚀 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. You've got some physical development to do, and the 3X Program includes the strength and power protocols to build that foundation while you're learning elite mechanics. 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 Total Body Strength. Together, these account for about 6.8 mph of your velocity gap.
Broad Jump +3.1 mph
Current 90 in
Percentile 31th
Target 102 in
To Gain +12 in
Total Body Strength +3.6 mph
Current 310 lbs
Percentile 16th
Target 533.3 lbs
To Gain +223.3 lbs
🔧 Supporting Work
After that, it's about the supporting package: left shoulder external rotation (mobility), Body Height, Left Shoulder External Rotation Strength. These aren't the headline levers, but they raise the floor and make your mechanics easier to execute.
🎯 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.
🚀 What's Next
Hit these targets, re-test, and the system will update the next set of variables to chase. This is iterative — each evaluation narrows the focus as your profile improves. Plan to re-evaluate in 8-12 weeks.

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Achievement Milestones

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