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Lalia Mejia – Player Evaluation Report – TopVelocity.ai
Lalia Mejia

Lalia Mejia

USA 14 years old Born Aug 31, 2011 Eval: Mar 22, 2025
C TopVelocity Evaluation
59
Velocity
5'1"
Height
143
Weight
🤖

AI Velocity Analysis

Machine learning prediction based on 1,535 elite athletes

Camp Velocity
59
mph
AI Prediction
63
mph
Based on physical metrics
Difference
4.8
mph
Below prediction
Proficiency
14
%ile
Mechanics efficiency
💡
What this means: Needs work - large gap between potential and performance
There's potential to gain 4.8 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 68.0" 1%ile
Goal 90.9" 31%ile
Lateral Broad Jump (Combined) +2.0 mph
Current 124.0" 3%ile
Goal 150.0" 33%ile
Left Grip +1.8 mph
Current 65.0 lbs 3%ile
Goal 95.0 lbs 33%ile
Right Grip +1.8 mph
Current 60.0 lbs 2%ile
Goal 100.0 lbs 32%ile
Vertical Jump +1.8 mph
Current 19.0" 4%ile
Goal 24.0" 34%ile
10-Yard Sprint +1.5 mph
Current 1.910s 4%ile
Goal 1.703s 34%ile
Weight +1.5 mph
Current 143.0 lbs 11%ile
Goal 174.2 lbs 41%ile
Total Body Strength +1.4 mph
Current 275.0 lbs 8%ile
Goal 370.0 lbs 38%ile

🎯 Biomechanic Variables to Improve

Motion capture metrics from your throwing mechanics analysis.

Trunk Rotation Speed @ FFS +1.9 mph
Current 214.0°/s 5%ile
Goal 755.6°/s 35%ile
Pelvis Rotation Speed @ FFS +1.7 mph
Current 239.0°/s 8%ile
Goal 673.0°/s 38%ile
Arm Rotation Speed @ MER +1.1 mph
Current 306.0°/s 17%ile
Goal 1,237.5°/s 47%ile
Shoulder Horiz Abd @ BR +0.6 mph
Current -22.0° 10%ile
Goal -2.0° 40%ile
Arm Extension @ Ball Release +0.5 mph
Current 24.0° 1%ile
Goal 70.0° 31%ile
Trunk Flexion @ Balance +0.4 mph
Current 16.0° 8%ile
Goal 32.0° 38%ile
Total Potential Velocity Gain: +20.1 mph → Target: 90 mph
Working Toward 90 mph
You need +31.0 mph to reach your target.
Improving to 90th percentile in the metrics above can provide +20.1 mph.
10.9 mph gap remaining
Set an achievable interim target of 79 mph, then reassess.
🎖️

TopVelocity Ranking

Based on the TopVelocity Evaluation System

Current Rank
Unranked
Youth Level 3 2/16 metrics
Youth Level 2 5/16 metrics
Youth Level 1 12/16 metrics
Vertical Jump 19.0 / ≥17.0
Broad Jump 68.0 / ≥72.0
10 Yard Sprint 1.9 / ≤2.1
Total Body Strength 275.0 / ≥200.0
Right Hip Internal Rotation 25.0 / ≥30.0
Left Hip Internal Rotation 40.0 / ≥30.0
Right Hip Extension 18.0 / ≥15.0
Left Hip Extension 20.0 / ≥15.0
Right Hip Flexion 90.0 / ≥80.0
Left Hip Flexion 100.0 / ≥80.0
Right Hip Abduction 45.0 / ≥45.0
Left Hip Abduction 45.0 / ≥45.0
Right Trunk Rotation 55.0 / ≥65.0
Left Trunk Rotation 50.0 / ≥65.0
Right Dorsiflexion 12.0 / ≥10.0
Left Dorsiflexion 14.0 / ≥10.0
📊 Performance Scores (Percentile)
🔄
55
Mobility
💪
27
Shoulder
10
Power
⚖️
8
Balance
🎯
45
Mechanics
🏆
29
Overall
📏

Anthropometric

3 metrics measured

6
Overall
61.0 in
in
Body Height
2th Percentile
Elite (90th): 75.0 in
Difference: -14.0 in
143 lbs
lbs
Body Weight
10th Percentile
Elite (90th): 216 lbs
Difference: -73 lbs
62.0 in
in
Wing Span
4th Percentile
Elite (90th): 76.0 in
Difference: -14.0 in
🔄

Mobility

23 metrics measured

55
Overall
12 °
°
Right Dorsiflexion
60th Percentile
Elite (90th): 19 °
Difference: -7 °
14 °
°
Left Dorsiflexion
70th Percentile
Elite (90th): 18 °
Difference: -4 °
60 °
°
Right Plantar Flexion
50th Percentile
Elite (90th): 75 °
Difference: -15 °
60 °
°
Left Plantar Flexion
50th Percentile
Elite (90th): 75 °
Difference: -15 °
25 °
°
Right Hip Internal Rotation
37th Percentile
Elite (90th): 40 °
Difference: -15 °
40 °
°
Left Hip Internal Rotation
90th Percentile
Elite (90th): 40 °
Difference: ✓ Elite
41 °
°
Right Hip External Rotation
55th Percentile
Elite (90th): 54 °
Difference: -12 °
35 °
°
Left Hip External Rotation
34th Percentile
Elite (90th): 50 °
Difference: -15 °
18 °
°
Right Hip Extension
50th Percentile
Elite (90th): 25 °
Difference: -7 °
20 °
°
Left Hip Extension
50th Percentile
Elite (90th): 25 °
Difference: -5 °
90 °
°
Right Hip Flexion
75th Percentile
Elite (90th): 95 °
Difference: -5 °
100 °
°
Left Hip Flexion
95th Percentile
Elite (90th): 95 °
Difference: ✓ Elite
45 °
°
Right Hip Abduction
50th Percentile
Elite (90th): 51 °
Difference: -6 °
45 °
°
Left Hip Abduction
50th Percentile
Elite (90th): 52 °
Difference: -7 °
38 °
°
Right Shoulder Internal Rotation
25th Percentile
Elite (90th): 70 °
Difference: -32 °
62 °
°
Left Shoulder Internal Rotation
70th Percentile
Elite (90th): 80 °
Difference: -18 °
101 °
°
Right Shoulder External Rotation
40th Percentile
Elite (90th): 120 °
Difference: -19 °
112 °
°
Left Shoulder External Rotation
85th Percentile
Elite (90th): 115 °
Difference: -3 °
25 °
°
Right Shoulder Horizontal Abduction
50th Percentile
Elite (90th): 35 °
Difference: -10 °
25 °
°
Left Shoulder Horizontal Abduction
50th Percentile
Elite (90th): 35 °
Difference: -10 °
48 °
°
Trunk Extension
84th Percentile
Elite (90th): 50 °
Difference: -2 °
55 °
°
Right Trunk Rotation
25th Percentile
Elite (90th): 75 °
Difference: -20 °
50 °
°
Left Trunk Rotation
25th Percentile
Elite (90th): 70 °
Difference: -20 °
💪

Strength & Power

10 metrics measured

10
Overall
19.0 in
in
Vertical Jump
7th Percentile
Elite (90th): 30.0 in
Difference: -11.0 in
68 in
in
Broad Jump
4th Percentile
Elite (90th): 108 in
Difference: -40 in
62 in
in
Right Lateral Broad Jump
4th Percentile
Elite (90th): 86 in
Difference: -24 in
62 in
in
Left Lateral Broad Jump
4th Percentile
Elite (90th): 86 in
Difference: -24 in
1.910 s
s
10 Yard Sprint
6th Percentile
Elite (90th): 1.880 s
Difference: +0.030 s
275 lbs
lbs
Total Body Strength
9th Percentile
Elite (90th): 600 lbs
Difference: -325 lbs
60 lbs
lbs
Right Grip Strength
4th Percentile
Elite (90th): 130 lbs
Difference: -70 lbs
65 lbs
lbs
Left Grip Strength
5th Percentile
Elite (90th): 130 lbs
Difference: -65 lbs
524 W
W
Right Rotational Power
29th Percentile
Elite (90th): 973 W
Difference: -449 W
466 W
W
Left Rotational Power
27th Percentile
Elite (90th): 909 W
Difference: -443 W
⚖️

Balance

4 metrics measured

8
Overall
28 in
in
Right Y-Balance 2
15th Percentile
Elite (90th): 47 in
Difference: -19 in
24 in
in
Right Y-Balance 3
5th Percentile
Elite (90th): 46 in
Difference: -22 in
25 in
in
Left Y-Balance 2
5th Percentile
Elite (90th): 46 in
Difference: -21 in
26 in
in
Left Y-Balance 3
7th Percentile
Elite (90th): 47 in
Difference: -21 in
🎯

Shoulder Strength

4 metrics measured

27
Overall
186 °
°
Right Shoulder Flexion
42th Percentile
Elite (90th): 209 °
Difference: -23 °
30 lbs
lbs
Right Shoulder Internal Rotation Strength
22th Percentile
Elite (90th): 55 lbs
Difference: -25 lbs
25 lbs
lbs
Right Shoulder External Rotation Strength
20th Percentile
Elite (90th): 49 lbs
Difference: -24 lbs
21 lbs
lbs
Scaption Right Back
22th Percentile
Elite (90th): 36 lbs
Difference: -15 lbs
⚙️

Mechanics

15 metrics measured

45
Overall
19 °
°
Hip Shoulder Separation Before Leg Drive
85th Percentile
Elite (90th): 21 °
Difference: -2 °
16 °
°
Trunk Flexion Before Leg Drive
8th Percentile
Elite (90th): 32 °
Difference: -16 °
38 °
°
Drive Knee Extension Before Leg Drive
4th Percentile
Elite (90th): 70 °
Difference: -32 °
49 °
°
Left Knee Flexion Front Foot Strike
50th Percentile
Elite (90th): 58 °
Difference: -9 °
93 °
°
Dominate Arm External Rotation Front Foot Strike
83th Percentile
Elite (90th): 97 °
Difference: -4 °
32 °
°
Dominate Arm Shoulder Abduction Front Foot Strike
50th Percentile
Elite (90th): 45 °
Difference: -13 °
239 °/s
°/s
Pelvis Rotation Speed Front Foot Strike
13th Percentile
Elite (90th): 673 °/s
Difference: -434 °/s
214 °/s
°/s
Trunk Rotation Speed Front Foot Strike
12th Percentile
Elite (90th): 756 °/s
Difference: -542 °/s
179 °
°
Dominate Arm External Rotation Maximum External Rotation
81th Percentile
Elite (90th): 184 °
Difference: -5 °
6 °
°
Dominate Arm Shoulder Abduction Maximum External Rotation
81th Percentile
Elite (90th): 9 °
Difference: -3 °
306 °/s
°/s
Dominate Arm External Rotation Speed Maximum External Rotation
26th Percentile
Elite (90th): 1238 °/s
Difference: -932 °/s
38 °
°
Trunk Flexion Ball Release
80th Percentile
Elite (90th): 42 °
Difference: -4 °
99 °
°
Dominate Arm Shoulder Abduction Ball Release
68th Percentile
Elite (90th): 105 °
Difference: -6 °
-22 °
°
Dominate Arm Shoulder Horizontal Abduction Ball Release
20th Percentile
Elite (90th): -2 °
Difference: -20 °
24 °
°
Dominate Arm Extension Ball Release
4th Percentile
Elite (90th): 70 °
Difference: -46 °

Pitch Metrics

1 metrics measured

5
Overall
59 mph
mph
Total Velocity
4th Percentile
Elite (90th): 86 mph
Difference: -27 mph
🎯

Brent Pourciau's Analysis

Road to 90

Personalized roadmap for Lalia Mejia

📊 The Overview
Alright Lalia, here's your Road to 90. You're currently sitting at 59 mph, which means you need about 31.0 mph to hit your target of 90. You're early in your development journey at the 29th 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
Lalia, let me be real with you — this is actually exciting news. You're throwing 59 mph, but based on your physical metrics, the AI model says you should be around 63.8 mph. That 4.8 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 14th 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: 68.0" (1th %ile) Target: 90.9" (31th %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: 124.0" (3th %ile) Target: 150.0" (33th %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.
Left Grip Strength +1.8 mph
Current: 65.0 lbs (3th %ile) Target: 95.0 lbs (33th %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 +6.2 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 +20.1 mph, which would put you around 79 mph. That's a great interim target. The remaining 10.9 mph will require elite-level development — we're talking about pushing past 90th percentile on multiple metrics. Set 79 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 vertical jump. Together, these account for about 6.0 mph of your velocity gap.
Broad Jump +3.1 mph
Current 68 in
Percentile 5th
Target 102 in
To Gain +34 in
Vertical Jump +2.9 mph
Current 19 in
Percentile 8th
Target 28 in
To Gain +9 in
🔧 Supporting Work
After that, it's about the supporting package: Left Grip Strength, Right Grip Strength (power/stability), Body Height. 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 Pelvis Rotation Speed Front Foot Strike and Trunk 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.
Pelvis Rotation Speed Front Foot Strike +2 mph
Current Percentile 14th
🎯 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
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