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Chase Zufall – Player Evaluation Report – TopVelocity.ai
Chase Zufall

Chase Zufall

USA 17 years old Born May 1, 2008 Eval: Aug 30, 2025
LHP TopVelocity Evaluation
63
Velocity
6'1"
Height
183
Weight
🤖

AI Velocity Analysis

Machine learning prediction based on 1,535 elite athletes

Camp Velocity
63
mph
AI Prediction
73
mph
Based on physical metrics
Difference
10.7
mph
Below prediction
Proficiency
3
%ile
Mechanics efficiency
💡
What this means: Needs work - large gap between potential and performance
There's potential to gain 10.7 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 86.0" 17%ile
Goal 96.0" 47%ile
Lateral Broad Jump (Combined) +2.0 mph
Current 140.0" 11%ile
Goal 152.0" 41%ile
Right Grip +1.8 mph
Current 78.0 lbs 7%ile
Goal 100.0 lbs 37%ile
Vertical Jump +1.8 mph
Current 22.0" 14%ile
Goal 25.0" 44%ile
Left Grip +1.8 mph
Current 88.0 lbs 18%ile
Goal 104.9 lbs 48%ile
Vertical Jump 225 +1.8 mph
Current 20.0" 50%ile
Goal 23.0" 80%ile
10-Yard Sprint +1.5 mph
Current 1.790s 15%ile
Goal 1.680s 45%ile
Weight +1.5 mph
Current 183.0 lbs 51%ile
Goal 206.4 lbs 81%ile

🎯 Biomechanic Variables to Improve

Motion capture metrics from your throwing mechanics analysis.

Trunk Rotation Speed @ FFS +1.9 mph
Current 252.0°/s 6%ile
Goal 755.6°/s 36%ile
Pelvis Rotation Speed @ FFS +1.7 mph
Current 297.0°/s 12%ile
Goal 673.0°/s 42%ile
Trunk Flexion @ Ball Release +1.3 mph
Current 26.0° 36%ile
Goal 34.2° 66%ile
Arm External Rotation @ MER +1.2 mph
Current 160.0° 39%ile
Goal 173.0° 69%ile
Arm Rotation Speed @ MER +1.1 mph
Current 579.0°/s 30%ile
Goal 731.1°/s 60%ile
Arm External Rotation @ FFS +1.0 mph
Current 74.0° 44%ile
Goal 88.2° 74%ile
Total Potential Velocity Gain: +22.5 mph → Target: 90 mph
Working Toward 90 mph
You need +27.0 mph to reach your target.
Improving to 90th percentile in the metrics above can provide +22.5 mph.
4.5 mph gap remaining
Consider setting an interim target of 85 mph first.
🎖️

TopVelocity Ranking

Based on the TopVelocity Evaluation System

Current Rank
Unranked
Youth Level 3 7/16 metrics
Youth Level 2 8/16 metrics
Youth Level 1 9/16 metrics
Vertical Jump 22.0 / ≥17.0
Broad Jump 86.0 / ≥72.0
10 Yard Sprint 1.8 / ≤2.1
Total Body Strength 475.0 / ≥200.0
Right Hip Internal Rotation 40.0 / ≥30.0
Left Hip Internal Rotation 40.0 / ≥30.0
Right Hip Extension 10.0 / ≥15.0
Left Hip Extension 10.0 / ≥15.0
Right Hip Flexion 65.0 / ≥80.0
Left Hip Flexion 68.0 / ≥80.0
Right Hip Abduction 40.0 / ≥45.0
Left Hip Abduction 45.0 / ≥45.0
Right Trunk Rotation 40.0 / ≥65.0
Left Trunk Rotation 40.0 / ≥65.0
Right Dorsiflexion 55.0 / ≥10.0
Left Dorsiflexion 52.0 / ≥10.0
📊 Performance Scores (Percentile)
🔄
34
Mobility
💪
79
Shoulder
24
Power
⚖️
14
Balance
🎯
47
Mechanics
🏆
40
Overall
📏

Anthropometric

3 metrics measured

67
Overall
73.0 in
in
Body Height
75th Percentile
Elite (90th): 75.0 in
Difference: -2.0 in
183 lbs
lbs
Body Weight
51th Percentile
Elite (90th): 216 lbs
Difference: -33 lbs
74.0 in
in
Wing Span
75th Percentile
Elite (90th): 76.0 in
Difference: -2.0 in
🔄

Mobility

23 metrics measured

34
Overall
55 °
°
Right Dorsiflexion
95th Percentile
Elite (90th): 19 °
Difference: ✓ Elite
52 °
°
Left Dorsiflexion
96th Percentile
Elite (90th): 18 °
Difference: ✓ Elite
8 °
°
Right Plantar Flexion
0th Percentile
Elite (90th): 75 °
Difference: -67 °
8 °
°
Left Plantar Flexion
0th Percentile
Elite (90th): 75 °
Difference: -67 °
40 °
°
Right Hip Internal Rotation
90th Percentile
Elite (90th): 40 °
Difference: ✓ Elite
40 °
°
Left Hip Internal Rotation
90th Percentile
Elite (90th): 40 °
Difference: ✓ Elite
30 °
°
Right Hip External Rotation
10th Percentile
Elite (90th): 54 °
Difference: -24 °
30 °
°
Left Hip External Rotation
10th Percentile
Elite (90th): 50 °
Difference: -20 °
10 °
°
Right Hip Extension
5th Percentile
Elite (90th): 25 °
Difference: -15 °
10 °
°
Left Hip Extension
5th Percentile
Elite (90th): 25 °
Difference: -15 °
65 °
°
Right Hip Flexion
10th Percentile
Elite (90th): 95 °
Difference: -30 °
68 °
°
Left Hip Flexion
15th Percentile
Elite (90th): 95 °
Difference: -27 °
40 °
°
Right Hip Abduction
25th Percentile
Elite (90th): 51 °
Difference: -11 °
45 °
°
Left Hip Abduction
50th Percentile
Elite (90th): 52 °
Difference: -7 °
78 °
°
Right Shoulder Internal Rotation
94th Percentile
Elite (90th): 70 °
Difference: ✓ Elite
55 °
°
Left Shoulder Internal Rotation
58th Percentile
Elite (90th): 80 °
Difference: -25 °
90 °
°
Right Shoulder External Rotation
10th Percentile
Elite (90th): 120 °
Difference: -30 °
100 °
°
Left Shoulder External Rotation
50th Percentile
Elite (90th): 115 °
Difference: -15 °
12 °
°
Right Shoulder Horizontal Abduction
3th Percentile
Elite (90th): 35 °
Difference: -23 °
21 °
°
Left Shoulder Horizontal Abduction
17th Percentile
Elite (90th): 35 °
Difference: -14 °
30 °
°
Trunk Extension
25th Percentile
Elite (90th): 50 °
Difference: -20 °
40 °
°
Right Trunk Rotation
4th Percentile
Elite (90th): 75 °
Difference: -35 °
40 °
°
Left Trunk Rotation
5th Percentile
Elite (90th): 70 °
Difference: -30 °
💪

Strength & Power

11 metrics measured

24
Overall
22.0 in
in
Vertical Jump
20th Percentile
Elite (90th): 30.0 in
Difference: -8.0 in
20.0 in
in
Vertical Jump 225lbs
50th Percentile
Elite (90th): 24.3 in
Difference: -4.3 in
86 in
in
Broad Jump
21th Percentile
Elite (90th): 108 in
Difference: -22 in
68 in
in
Right Lateral Broad Jump
10th Percentile
Elite (90th): 86 in
Difference: -18 in
72 in
in
Left Lateral Broad Jump
25th Percentile
Elite (90th): 86 in
Difference: -14 in
1.790 s
s
10 Yard Sprint
5th Percentile
Elite (90th): 1.880 s
Difference: -0.090 s
475 lbs
lbs
Total Body Strength
68th Percentile
Elite (90th): 600 lbs
Difference: -125 lbs
78 lbs
lbs
Right Grip Strength
9th Percentile
Elite (90th): 130 lbs
Difference: -52 lbs
88 lbs
lbs
Left Grip Strength
23th Percentile
Elite (90th): 130 lbs
Difference: -42 lbs
322 W
W
Right Rotational Power
4th Percentile
Elite (90th): 973 W
Difference: -651 W
455 W
W
Left Rotational Power
25th Percentile
Elite (90th): 909 W
Difference: -454 W
⚖️

Balance

6 metrics measured

14
Overall
24 in
in
Right Y-Balance 1
33th Percentile
Elite (90th): 36 in
Difference: -12 in
17 in
in
Right Y-Balance 2
3th Percentile
Elite (90th): 47 in
Difference: -30 in
26 in
in
Right Y-Balance 3
10th Percentile
Elite (90th): 46 in
Difference: -20 in
22 in
in
Left Y-Balance 1
17th Percentile
Elite (90th): 37 in
Difference: -15 in
26 in
in
Left Y-Balance 2
7th Percentile
Elite (90th): 46 in
Difference: -20 in
28 in
in
Left Y-Balance 3
15th Percentile
Elite (90th): 47 in
Difference: -19 in
🎯

Shoulder Strength

4 metrics measured

79
Overall
201 °
°
Left Shoulder Flexion
77th Percentile
Elite (90th): 211 °
Difference: -10 °
55 lbs
lbs
Left Shoulder Internal Rotation Strength
87th Percentile
Elite (90th): 56 lbs
Difference: -1 lbs
42 lbs
lbs
Left Shoulder External Rotation Strength
70th Percentile
Elite (90th): 49 lbs
Difference: -7 lbs
32 lbs
lbs
Scaption Left Back
80th Percentile
Elite (90th): 34 lbs
Difference: -2 lbs
⚙️

Mechanics

15 metrics measured

47
Overall
22 °
°
Hip Shoulder Separation Before Leg Drive
91th Percentile
Elite (90th): 21 °
Difference: ✓ Elite
20 °
°
Trunk Flexion Before Leg Drive
19th Percentile
Elite (90th): 32 °
Difference: -12 °
57 °
°
Drive Knee Extension Before Leg Drive
33th Percentile
Elite (90th): 70 °
Difference: -13 °
52 °
°
Left Knee Flexion Front Foot Strike
65th Percentile
Elite (90th): 58 °
Difference: -6 °
74 °
°
Dominate Arm External Rotation Front Foot Strike
48th Percentile
Elite (90th): 97 °
Difference: -23 °
26 °
°
Dominate Arm Shoulder Abduction Front Foot Strike
25th Percentile
Elite (90th): 45 °
Difference: -19 °
297 °/s
°/s
Pelvis Rotation Speed Front Foot Strike
18th Percentile
Elite (90th): 673 °/s
Difference: -376 °/s
252 °/s
°/s
Trunk Rotation Speed Front Foot Strike
15th Percentile
Elite (90th): 756 °/s
Difference: -504 °/s
160 °
°
Dominate Arm External Rotation Maximum External Rotation
44th Percentile
Elite (90th): 184 °
Difference: -24 °
3 °
°
Dominate Arm Shoulder Abduction Maximum External Rotation
70th Percentile
Elite (90th): 9 °
Difference: -6 °
579 °/s
°/s
Dominate Arm External Rotation Speed Maximum External Rotation
51th Percentile
Elite (90th): 1238 °/s
Difference: -658 °/s
26 °
°
Trunk Flexion Ball Release
40th Percentile
Elite (90th): 42 °
Difference: -16 °
96 °
°
Dominate Arm Shoulder Abduction Ball Release
50th Percentile
Elite (90th): 105 °
Difference: -9 °
2 °
°
Dominate Arm Shoulder Horizontal Abduction Ball Release
94th Percentile
Elite (90th): -2 °
Difference: ✓ Elite
40 °
°
Dominate Arm Extension Ball Release
36th Percentile
Elite (90th): 70 °
Difference: -30 °

Pitch Metrics

4 metrics measured

36
Overall
21 in
in
Vertical Break
95th Percentile
Elite (90th): 20 in
Difference: ✓ Elite
-5 in
in
Horizontal Break
16th Percentile
Elite (90th): 14 in
Difference: -19 in
1746 rpm
rpm
Total Spin
29th Percentile
Elite (90th): 2178 rpm
Difference: -432 rpm
63 mph
mph
Total Velocity
5th Percentile
Elite (90th): 86 mph
Difference: -23 mph
🎯

Brent Pourciau's Analysis

Road to 90

Personalized roadmap for Chase Zufall

📊 The Overview
Alright Chase, here's your Road to 90. You're currently sitting at 63 mph, which means you need about 27.0 mph to hit your target of 90. Your profile is in the 40th 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
Chase, let me be real with you — this is actually exciting news. You're throwing 63 mph, but based on your physical metrics, the AI model says you should be around 73.7 mph. That 10.7 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 3th 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: 86.0" (17th %ile) Target: 96.0" (47th %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: 140.0" (11th %ile) Target: 152.0" (41th %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.
Right Grip Strength +1.8 mph
Current: 78.0 lbs (7th %ile) Target: 100.0 lbs (37th %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 = +5.9 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?
Let me be honest with you — getting to 90 mph is a big goal. The improvements I've outlined give you about +22.5 mph, which would put you around 85 mph. That's a great interim target. The remaining 4.5 mph will require elite-level development — we're talking about pushing past 90th percentile on multiple metrics. Set 85 mph as your first milestone, crush that, then we'll re-evaluate and map out the next phase.
🚀 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 Left Grip Strength. Together, these account for about 3.2 mph of your velocity gap.
Broad Jump +2.1 mph
Current 86 in
Percentile 21th
Target 102 in
To Gain +16 in
Left Grip Strength +1.1 mph
Current 88 lbs
Percentile 23th
Target 113.8 lbs
To Gain +25.8 lbs
🔧 Supporting Work
After that, it's about the supporting package: right shoulder external rotation (mobility), Right Grip Strength, vertical jump (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 Maximum External Rotation and Pelvis Rotation Speed Front Foot Strike. 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 Maximum External Rotation +1 mph
Current Percentile 44th
🎯 Your Action Plan
Movement Cues:
"Shin down, leverage, drive — use the ground."
Training Priorities:
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