⚡ Free MechanicsDNA Mini · No Account Required

Free Baseball Pitching Biomechanics Analysis

Upload one pitching video and review five training-focused biomechanics markers with TopVelocity's free browser-based MechanicsDNA Mini. Use the results to guide training conversations; the tool is not a medical evaluation or injury-prediction system.

Hip-to-Shoulder Separation at foot contact
Stride length as a % of your body height
Forward trunk tilt at ball release
Vertical trunk lean at foot contact
Shoulder abduction at landing (elbow-above-shoulder check)

Pitching mechanics analysis that runs entirely in your browser — your video never leaves your device.

MechanicsDNA pitching biomechanics analysis in the TopVelocity player app

The full MechanicsDNA lives in the TopVelocity baseball biomechanics app. Your free Mini scan previews the same kind of baseball pitching video analysis players run inside the player development platform — on the web or in the app.

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PLUS: Coach Brent's AI breaks down your scan.
After your scan, chat directly with Brent about what the mechanics data means and how to fix it — free.

Get your MechanicsDNA Mini scan

Enter your info to unlock the video uploader. Takes 20 seconds.

Full Name

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Age

Throws

Current Velocity (optional)

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Plus: get your scan analyzed by Coach Brent After your scan renders, talk to Brent in a live chat — he'll walk through YOUR 5 markers with you, tell you which are costing velocity, and what to do about it.

⚡ No credit card · No account needed · Video never leaves your device

Free

No Account Required

Training-Focused Markers

PhD

Biomechanics · Brent Pourciau

20+

Years Coaching

What The Mini Scan Gives You

Pitching Mechanics Analysis
You Can Act On.

Five training-focused markers measured from one video — hip-shoulder separation, stride length, trunk tilt at release, trunk lean at foot contact, and shoulder abduction at landing — each interpreted against ranges reported in published pitching biomechanics research.

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Research-Informed Markers

With citations on every card

Your video is processed entirely in your browser with on-device pose estimation. Nothing is uploaded, and no account or credit card is required for the free scan.

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Private By Design

Video never leaves your device

Results are built for training conversations — talk them through with Coach Brent's AI, share them with your own coach, or use them to decide what to work on next. Results vary by athlete; the Mini is not a medical evaluation.

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Built For Training Decisions

Not a diagnosis

The Platform

Pro-Level Tools.
Now Available to Every Athlete.

The Mini is a free preview of the TopVelocity player development platform — biomechanics, strength and pitch-analysis tools connected in one baseball player portal.

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Full MechanicsDNA

3D motion capture via Move.ai. 15+ markers measured across the entire delivery or swing — peak pelvis & trunk velocities, event detection, kinematic sequencing.

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ForceIQ Strength & Workload Monitoring

Guided bilateral strength testing with measurable results that athletes and coaches use to review readiness, asymmetries and training priorities.

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PitchDNA Pitch Grading

AI-graded pitch quality on every throw — velocity, spin, trajectory, command. Know exactly which pitches are plus vs. playable vs. fixable.

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Remote Coaching

Live video coaching, annotated feedback, and structured programming from Brent's team — built directly on top of your MechanicsDNA + ForceIQ data.

🎯 Ready to Close the Gap?

Turn Your Mini Scan Into
a Training Plan

The full TopVelocity system pairs your biomechanics data with structured training programs, strength monitoring and coaching. Results vary by athlete, training history, adherence, health and other factors.

🧬 Upgrade to Full MechanicsDNA Portal

3D mocap · 15+ markers · ForceIQ · PitchDNA · Remote Coaching · 7-day free trial

🏕️ Register for 3X Velocity Camp

2 days · Covington, LA · AI biomechanics + Olympic lifting + velocity testing

📱 Start Remote Coaching with Brent

1-on-1 · MechanicsDNA + ForceIQ + custom programming · anywhere in the world

Your MechanicsDNA Mini is ready.

Scrub the video and toggle the overlay pills below — just like the Full MechanicsDNA inside the portal. Some tools are locked.

⚡ 2D AI Pose Analysis

Overlays

🔒 Locked in the Mini · Unlocked in Full MechanicsDNA

Your 5 Pitching Markers — Detailed Findings

Brent is online now

Want me to walk through
YOUR scan with you?

This Mini shows you 5 training-focused markers — but the numbers mean more when we talk through what the kinetic chain is actually doing. Let me look at yours.

💬 Talk to Brent about my scan → 📱 Text Brent about my scan →

It's really me answering — drawing on 20+ years of coaching, a PhD in biomechanics, and the published research cited in your scan.

The Mini is the taste. Full MechanicsDNA is the real thing.

What you just saw is the MechanicsDNA Mini — a free 2D browser scan of five training-focused markers. The full MechanicsDNA inside the player portal is a completely different system: 3D motion capture, 15+ markers, event detection, pitch-type compare, and a personalized fix plan.

MechanicsDNA Mini (Free)

5 markers · 1 video · 2D only

Hip-shoulder separation at foot contact
Stride length (% body height)
Forward trunk tilt at ball release
Vertical trunk lean at foot contact
Shoulder abduction at landing
3D motion capture (Move.ai)
Timeline curves across the full delivery
Pitch-type comparison (FB vs CH vs CB)
Personalized fix protocol & drills
Coach video review & messaging

Full MechanicsDNA (Player Portal)

15+ markers · unlimited videos · full 3D

Everything in the Mini
Full-body 3D mocap via Move.ai (no markers, no suit)
Peak pelvis & trunk rotational velocities (deg/sec)
Max shoulder external rotation (MER) angle
Lead knee flexion at FC & extension at ball release
Kinetic chain sequencing: pelvis → trunk → arm
Event detection you can override manually (FP, MER, BR)
PitchDNA pitch grading + ForceIQ force-plate testing
Personalized fix plan based on your actual data
Remote coaching with Brent's team

Upgrade to the Full MechanicsDNA Portal →

7-day free trial · Cancel anytime · Built by Brent Pourciau, PhD (Biomechanics)

The research behind these 5 markers

Every number in your MechanicsDNA Mini is interpreted against values reported in published pitching biomechanics research. We measure variables the literature has studied in relation to ball velocity and arm stress — the citations for each marker are below.

Hip-Shoulder Separation. Orishimo KF et al. "Role of Pelvis and Trunk Biomechanics in Generating Ball Velocity." J Strength Cond Res 37(3):623–628, 2023 (PMID 35836313). Average HSS at foot contact = 50° ± 12°; predicts peak trunk rotation velocity.

Stride Length. Diffendaffer AZ, Fleisig GS et al. "The Clinician's Guide to Baseball Pitching Biomechanics." Sports Health 15(6), 2023 (PMC9950989). Elite stride ≈ 83–85% of body height. Stodden DF et al. J Appl Biomech 21:44–56, 2005 (PMID 16131704): shorter strides significantly reduce ball velocity.

Forward Trunk Tilt at Release. Laughlin WA, Fleisig GS et al. AJSM 42(12):2837–41, 2014 (PMID 25318939): pitchers with SLAP-repair history showed less forward trunk tilt (30.2° vs 34.4°, p=.048). Stodden 2005: increased forward trunk tilt at release is linked to higher velocity.

Vertical Trunk at Foot Contact. Diffendaffer & Fleisig 2023: "Pitchers should have their upper trunk horizontal or tilted slightly uphill at foot contact." Oyama S et al. AJSM 41:2430–38, 2013: excessive contralateral trunk tilt at FC increases kinetics and injury risk.

Shoulder Abduction at Landing. Matsuo T, Fleisig GS et al. J Appl Biomech 22:93–102, 2006: deviations from ~90° shoulder abduction (the "elbow above shoulder" pattern) significantly increase peak elbow varus torque. Fortenbaugh, Fleisig & Andrews. Sports Health 1(4):314–320, 2009.

Methodology & Limitations

Published research. The citations above are group-level studies — mostly of college and professional pitchers — describing how these variables relate to ball velocity and arm stress across groups of athletes. They do not predict outcomes for any individual pitcher, and several study populations differ from youth athletes.

TopVelocity training targets. The grade bands and target ranges shown on your cards are TopVelocity training targets informed by the published values above and internal coaching practice. They are not universal clinical cutoffs.

Proprietary calculations. Measurements come from 2D on-device pose estimation (MediaPipe BlazePose) running in your browser. Camera angle, distance, lighting and frame rate affect accuracy, and 2D estimates can differ from laboratory 3D motion capture. The overall grade and the estimated percentile are TopVelocity calculations based on internal data.

Intended use. The MechanicsDNA Mini is a free educational pitching mechanics analysis for guiding training conversations. It is not a medical evaluation, diagnosis, or injury-prediction system, and it should not replace assessment by a qualified professional. Results vary by athlete.

Methodology last updated August 27, 2026.

Keep exploring TopVelocity

Ready for more than a free scan? The TopVelocity baseball player development platform connects full MechanicsDNA pitching biomechanics analysis, structured training programs and coaching in one player portal — on the web and in the baseball biomechanics app.

Prefer hands-on evaluation? Train in person at the 3X Velocity Camp in Covington, LA.

More free tools and reading: the pitching velocity by age guide, the free Grade My Pitch pitch grader, and ForceIQ strength and workload monitoring.

Free Baseball Pitching Biomechanics Analysis

Get your MechanicsDNA Mini scan

🎯 You've Used Your Free Scans

Turn Your Mini Scan Into
a Training Plan

Upload one pitching video for your Mini scan.

Your MechanicsDNA Mini is ready.

⚡ 2D AI Pose Analysis

The Mini is the taste. Full MechanicsDNA is the real thing.

5 markers · 1 video · 2D only

15+ markers · unlimited videos · full 3D

The research behind these 5 markers

Methodology & Limitations

Keep exploring TopVelocity

Free Baseball Pitching Biomechanics Analysis

Get your MechanicsDNA Mini scan

🎯 You've Used Your Free Scans

Turn Your Mini Scan Intoa Training Plan

Upload one pitching video for your Mini scan.

Your MechanicsDNA Mini is ready.

⚡ 2D AI Pose Analysis

The Mini is the taste. Full MechanicsDNA is the real thing.

5 markers · 1 video · 2D only

15+ markers · unlimited videos · full 3D

The research behind these 5 markers

Methodology & Limitations

Keep exploring TopVelocity

The 5 Velocity Killers Holding Your Pitcher Back

Get Instant Access — Free

Turn Your Mini Scan Into
a Training Plan