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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 7, 2024
LHP TopVelocity Evaluation
73
Velocity
5'11"
Height
155
Weight
🤖

AI Velocity Analysis

Machine learning prediction based on 1,535 elite athletes

Camp Velocity
73
mph
AI Prediction
68
mph
Based on physical metrics
Difference
+4.7
mph
Above prediction
Proficiency
83
%ile
Mechanics efficiency
💡
What this means: Excellent mechanics - above average efficiency
You're throwing 4.7 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 92.0" 32%ile
Goal 100.0" 62%ile
Lateral Broad Jump (Combined) +2.0 mph
Current 144.0" 17%ile
Goal 154.0" 47%ile
Vertical Jump +1.8 mph
Current 22.0" 14%ile
Goal 25.0" 44%ile
10-Yard Sprint +1.5 mph
Current 1.760s 20%ile
Goal 1.670s 50%ile
Weight +1.5 mph
Current 155.0 lbs 20%ile
Goal 182.1 lbs 50%ile
Hip Flexion (R) +0.6 mph
Current 70.0° 15%ile
Goal 78.0° 45%ile
Hip Extension (Combined) +0.6 mph
Current 35.0° 46%ile
Goal 44.0° 76%ile
Trunk Rotation (Combined) +0.5 mph
Current 115.0° 32%ile
Goal 125.0° 62%ile

🎯 Biomechanic Variables to Improve

Motion capture metrics from your throwing mechanics analysis.

Trunk Rotation Speed @ FFS +1.9 mph
Current 600.0°/s 59%ile
Goal 746.4°/s 89%ile
Trunk Flexion @ Ball Release +1.1 mph
Current 36.0° 68%ile
Goal 43.6° 95%ile
Arm External Rotation @ FFS +1.0 mph
Current 83.0° 58%ile
Goal 96.1° 88%ile
Shoulder Abduction @ MER +0.7 mph
Current -8.0° 15%ile
Goal 9.0° 45%ile
Shoulder Horiz Abd @ BR +0.6 mph
Current -26.0° 8%ile
Goal -2.0° 38%ile
Arm Extension @ Ball Release +0.5 mph
Current 32.0° 6%ile
Goal 70.0° 36%ile
Total Potential Velocity Gain: +16.4 mph → Target: 90 mph
Working Toward 90 mph
You need +17.0 mph to reach your target.
Improving to 90th percentile in the metrics above can provide +16.4 mph.
0.6 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 4/19 metrics
Youth Level 2 11/19 metrics
Youth Level 1 14/19 metrics
Vertical Jump 22.0 / ≥17.0
Broad Jump 92.0 / ≥72.0
10 Yard Sprint 1.8 / ≤2.1
Right Hip Internal Rotation 45.0 / ≥30.0
Left Hip Internal Rotation 35.0 / ≥30.0
Right Hip Extension 15.0 / ≥15.0
Left Hip Extension 20.0 / ≥15.0
Right Hip Flexion 70.0 / ≥80.0
Left Hip Flexion 82.0 / ≥80.0
Right Hip Abduction 40.0 / ≥45.0
Left Hip Abduction 40.0 / ≥45.0
Right Trunk Rotation 60.0 / ≥65.0
Left Trunk Rotation 55.0 / ≥65.0
Right Dorsiflexion 15.0 / ≥10.0
Left Dorsiflexion 15.0 / ≥10.0
📊 Performance Scores (Percentile)
🔄
50
Mobility
💪
34
Shoulder
47
Power
🏆
44
Overall
📏

Anthropometric

2 metrics measured

26
Overall
70.5 in
in
Body Height
31th Percentile
Elite (90th): 75.0 in
Difference: -4.5 in
155 lbs
lbs
Body Weight
20th Percentile
Elite (90th): 216 lbs
Difference: -61 lbs
🔄

Mobility

21 metrics measured

50
Overall
15 °
°
Right Dorsiflexion
75th Percentile
Elite (90th): 19 °
Difference: -4 °
15 °
°
Left Dorsiflexion
75th Percentile
Elite (90th): 18 °
Difference: -3 °
65 °
°
Right Plantar Flexion
62th Percentile
Elite (90th): 75 °
Difference: -10 °
65 °
°
Left Plantar Flexion
75th Percentile
Elite (90th): 75 °
Difference: -10 °
45 °
°
Right Hip Internal Rotation
95th Percentile
Elite (90th): 40 °
Difference: ✓ Elite
35 °
°
Left Hip Internal Rotation
75th Percentile
Elite (90th): 40 °
Difference: -5 °
35 °
°
Right Hip External Rotation
25th Percentile
Elite (90th): 54 °
Difference: -18 °
35 °
°
Left Hip External Rotation
34th Percentile
Elite (90th): 50 °
Difference: -15 °
15 °
°
Right Hip Extension
25th Percentile
Elite (90th): 25 °
Difference: -10 °
20 °
°
Left Hip Extension
50th Percentile
Elite (90th): 25 °
Difference: -5 °
70 °
°
Right Hip Flexion
19th Percentile
Elite (90th): 95 °
Difference: -25 °
82 °
°
Left Hip Flexion
55th Percentile
Elite (90th): 95 °
Difference: -13 °
40 °
°
Right Hip Abduction
25th Percentile
Elite (90th): 51 °
Difference: -11 °
40 °
°
Left Hip Abduction
25th Percentile
Elite (90th): 52 °
Difference: -12 °
52 °
°
Right Shoulder Internal Rotation
58th Percentile
Elite (90th): 70 °
Difference: -18 °
50 °
°
Left Shoulder Internal Rotation
50th Percentile
Elite (90th): 80 °
Difference: -30 °
96 °
°
Right Shoulder External Rotation
27th Percentile
Elite (90th): 120 °
Difference: -24 °
98 °
°
Left Shoulder External Rotation
45th Percentile
Elite (90th): 115 °
Difference: -17 °
45 °
°
Trunk Extension
75th Percentile
Elite (90th): 50 °
Difference: -5 °
60 °
°
Right Trunk Rotation
50th Percentile
Elite (90th): 75 °
Difference: -15 °
55 °
°
Left Trunk Rotation
37th Percentile
Elite (90th): 70 °
Difference: -15 °
💪

Strength & Power

5 metrics measured

47
Overall
22.0 in
in
Vertical Jump
20th Percentile
Elite (90th): 30.0 in
Difference: -8.0 in
92 in
in
Broad Jump
37th Percentile
Elite (90th): 108 in
Difference: -16 in
1.760 s
s
10 Yard Sprint
5th Percentile
Elite (90th): 1.880 s
Difference: -0.120 s
844 W
W
Right Rotational Power
79th Percentile
Elite (90th): 973 W
Difference: -129 W
910 W
W
Left Rotational Power
90th Percentile
Elite (90th): 909 W
Difference: ✓ Elite
🎯

Shoulder Strength

3 metrics measured

34
Overall
192 °
°
Left Shoulder Flexion
55th Percentile
Elite (90th): 211 °
Difference: -19 °
32 lbs
lbs
Left Shoulder Internal Rotation Strength
25th Percentile
Elite (90th): 56 lbs
Difference: -24 lbs
27 lbs
lbs
Left Shoulder External Rotation Strength
22th Percentile
Elite (90th): 49 lbs
Difference: -22 lbs

Pitch Metrics

2 metrics measured

22
Overall
1679 rpm
rpm
Total Spin
22th Percentile
Elite (90th): 2178 rpm
Difference: -499 rpm
73 mph
mph
Total Velocity
22th Percentile
Elite (90th): 86 mph
Difference: -13 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 73 mph, which means you need about 17.0 mph to hit your target of 90. Your profile is in the 44th 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, here's what jumps out at me — you're throwing 73 mph, but based on your physical profile, our AI model predicted you'd be around 68.3 mph. That's a +4.7 mph difference, which tells me your mechanics and motor patterns are already working in your favor. You're squeezing more velocity out of your body than most athletes with similar builds. That's a huge positive.
Your mechanics efficiency is at the 83th percentile — that's excellent. You're converting your athleticism into velocity very well. There may be small refinements we can make, but the big wins will come from improving your physical profile.
🎯 Your Biggest Opportunities
Based on the AI analysis, here are your biggest opportunities to add velocity:
Broad Jump +2.1 mph
Current: 92.0" (32th %ile) Target: 100.0" (62th %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: 144.0" (17th %ile) Target: 154.0" (47th %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: 22.0" (14th %ile) Target: 25.0" (44th %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 +5.8 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 +16.4 mph, which would put you around 89 mph. That's a great interim target. The remaining 0.6 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 vertical jump. Together, these account for about 5.1 mph of your velocity gap.
Broad Jump +2.1 mph
Current 92 in
Percentile 38th
Target 102 in
To Gain +10 in
Vertical Jump +3 mph
Current 22 in
Percentile 20th
Target 28 in
To Gain +6 in
🔧 Supporting Work
After that, it's about the supporting package: Left Hip Abduction, right shoulder external rotation (mobility), Body Height. 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.
Lateral Power
Lateral bounds, skater jumps, lateral sled work. Pitching is rotational — you need lateral force production.
🚀 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