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Diamond Arm Lab
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Features · v0.9 beta

Every tool that's
actually live.

No phantom features. No “coming soon” tiles. These are the eight systems running in beta right now, built on a framework professional baseball has used for years.

See pricing for parents and coaches or read about the athletic trainer behind DAL.

/ 01

ACWR Dashboard

Acute:Chronic Workload Ratio is the framework pro baseball uses to manage pitcher loads. 7-day load divided by 28-day average. Stay near 1.0, spike it, risk climbs. DAL tracks it continuously, colors the zones, and shows the 14-week view at a glance.

7-day vs 28-day windows
Color-coded risk zones
Full-season view
Per-player history
ACWR and workload dashboard: arm strain score with safe-zone indicator and total workload chart
/ 02

Session Tracking

Log games, bullpens, long toss, and catch in under 20 seconds. Throw count, distance, intensity (RPE), arm soreness, fatigue, and sleep quality. Works offline at the field and syncs when you reconnect. Every session feeds the ratio.

20-second entry
RPE · 0 to 10 scale
Soreness & sleep log
Offline-first PWA
Monthly training calendar with logged sessions marked in green
Day detail with session breakdown and strength work
Track a session screen with long-toss type, warm-up throws, distance, and RPE slider
/ 03

Video Analysis

Upload a pitch from your phone. DAL scores mechanics on stride length, hip-shoulder separation, arm slot consistency, and release point. Frame-by-frame scrubbing. Save clips to the player's profile.

AI mechanics scoring
Frame-by-frame review
Season comparison
Save to profile
AI video analysis results with elbow position, hip-shoulder separation, and stride length scores
/ 04

Throwing Programs

Curated by a Former Major League Assistant Athletic Trainer. Return-to-throw progressions, long-toss phases, in-season maintenance, off-season ramps. Each program maps to the player's age and current workload.

Return-to-throw
Long-toss phases
Age-appropriate
Hand-built by Matt
Long Toss · Phase 2 · Week 3
Mon60 ft · 25 throws
TueRest
Wed90 ft · 30 throws
ThuRecovery · J-bands
Fri120 ft · 25 throws
SatGame (if available)
SunFull rest
/ 05

Strength Routines

Arm-care routines that fit the week. J-bands, wall dribbles, rotator cuff, posterior chain. Each exercise links to a YouTube demo from the exercise library.

J-band routines
Rotator cuff work
YouTube demos
Routine builder
Arm-care routine · Post-throw
J-band pull-aparts
2 × 15
Reverse throws · J-band
2 × 15
External rot · 90°
2 × 15
Scap wall slides
2 × 15
Sleeper stretch
2 × 15
Cross-body stretch
2 × 15
/ 06

Coach Portal

Whole roster in one view, up to 30 players. Sort by risk. Filter by position. CSV export for game-day staff. Add notes, share with parents, export player histories.

Up to 30 players
Risk-sorted roster
CSV export
Parent sharing
Roster · 14U Tigers
6 players tracked
CSV ↓
Reyes, JRHP0.94
Park, MLHP1.42
Diaz, L3B1.08
Chen, RRHP1.61
Alvarez, KCF0.82
Walker, TC1.15
/ 07

SMS Reminders

Parents get a text when the ratio spikes, when recovery lags, or when it's time to log a session. No app required to read. The kid gets reminded to log. The parent gets the data.

Spike alerts
Log reminders
Recovery nudges
No app needed
Text thread
Jackson's ACWR is 1.58. Consider a rest day tomorrow before Saturday's game.
DAL · 7:42 AM
Don't forget to log today's bullpen.
DAL · 5:30 PM
/ 08

Recovery Insights

Track soreness, sleep, and perceived recovery alongside workload. DAL surfaces patterns: days of the week the ratio tends to spike, positions with highest loads, recovery time after max-effort outings.

Soreness tracking
Sleep × load
Pattern surfacing
Recovery time
Daily arm health tracker with soreness slider, fatigue level, and sleep quality

Protect the arm.
Play the season.

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