Product architecture

How CoachDeck runs a tryout

A coach-built platform that captures sideline data, scores athletes against position-specific rubrics, and drafts a defensible roster — end to end.

Core tryout flow

Athlete QR scan

Live Drills

Sideline scoring

Rules Engine

Weighted rubrics

Analytics

Per-position rank

Roster

Cut / promote / sign

System stack

Sideline Apps

React Native (iOS + Android) — offline-first drill scoring

API Gateway

REST + WebSocket — JWT auth, role-based access

Assessment Engine

Deterministic rules pipeline, position-aware weights

Data Layer

Postgres + Redis cache — append-only score ledger

Integrations

Webhooks to TeamSnap, SportsEngine, Hudl

Privacy & Trust

COPPA-aware, SOC 2 Type II controls

Rules engine

Each drill score flows through a deterministic pipeline that produces position-relative ranks.

Raw score
  → Normalize (age & gender curves)
  → Position weights
      Forward: speed×0.35 agility×0.30 skill×0.35
      Midfielder: endurance×0.30 skill×0.40 agility×0.30
      Goalkeeper: reaction×0.45 strength×0.30 skill×0.25
  → Drill confidence (sample count)
  → Composite Index
  → Rank percentile (per cohort)

Latency

42ms

Accuracy

94.6%

Drills

120+

Data flow (per assessment)

1. Capture

· Coach taps score on tablet
· Offline queue persists
· Synced on reconnect

2. Process

· Engine normalizes raw input
· Applies position weights
· Writes immutable score event

3. Surface

· Live leaderboard updates
· Push to scout dashboards
· Trigger roster recommendations

See it in action

Try the platform