Automated NCAA Bracket Pool Commissioner Platform

Cutting 5–10 Hours of Commissioner Work Per Tournament With ESPN Sync, Stripe & AI Projections

App: March Madness Commissioner | Industry: Fantasy Sports / SaaS | Client: Fantasy sports commissioners and office-pool organizers | Company size: B2C / prosumer tool for sports communities, workplaces, and friend groups | Duration: ~6–8 weeks of focused build cycles

Summary

A full-stack commissioner dashboard that automates ESPN bracket league management — syncing picks, tracking payments, and generating AI-powered win projections — with a companion iOS mobile app.

The Challenge

Running a March Madness pool manually is painfully tedious — commissioners juggle ESPN/CBS bracket data, chase players for buy-ins across Venmo/Zelle/CashApp, manually compute standings as games complete, and have no way to share live results or distribute prizes. There's no single tool that handles brackets, money, and analytics in one place.

Our Approach

• Built a custom ESPN + CBS data sync engine that imports pool entries, normalizes scoring across platforms (CBS-to-ESPN conversion), and auto-updates leaderboards as games finish
• Integrated Stripe Connect for marketplace-style payment collection — commissioners onboard their own Stripe account and collect buy-ins via shareable checkout links with auto-reconciliation
• Layered GPT-5-mini for AI win-probability projections, projected final scores, ranking forecasts, and natural-language insights per bracket entry
• Created a bracket visualization engine showing pick-by-pick correctness with actual-winner overlays
• Shipped Express 5 + Drizzle / PostgreSQL backend powering a React + Vite + Tailwind web app and an Expo React Native iOS app
• Built dual-role auth (Commissioner / free Viewer) so leagues can be shared publicly without exposing admin controls

Outcomes & ROI

• 5–10 hrs — Commissioner Work Eliminated: Per tournament — no more manual bracket tracking, payment chasing, or leaderboard math
• 100% — Stripe Auto-Reconciliation: Zero manual entry for digital payments collected through shareable checkout links
• Seconds — AI Insight Refresh: Win projections refresh leaderboard insights vs. hours of spreadsheet work

Supports unlimited players per league across web + mobile, eliminating the manual commissioner workflow that historically required spreadsheets, payment apps, and ESPN tabs running side-by-side.

Technologies Used

React + Vite + Tailwind, Express 5 + Drizzle ORM, PostgreSQL, Expo React Native (iOS), GPT-5-mini, Stripe Connect, ESPN + CBS data sync

Key Takeaways

1. Stripe Connect (vs. plain Stripe) is the right pattern any time end users need to collect their own funds — onboarding flows are the only complexity worth wrestling
2. Cross-platform scoring normalization (CBS → ESPN) is the kind of unglamorous integration work that turns a 'good enough' product into a sticky one
3. AI projections are most valuable as quick-glance insights on existing leaderboards, not as standalone features

Frequently Asked Questions

Does it work with both ESPN and CBS bracket pools?

Yes — the sync engine imports pools from both platforms and normalizes CBS scoring to the ESPN scale so leaderboards are consistent regardless of source.

How do payments work?

Stripe Connect — each commissioner onboards their own Stripe account and shares a checkout link with players. Buy-ins land in the commissioner's account and reconcile automatically inside the app.

Is there a mobile app?

Yes — a companion iOS app built with Expo React Native mirrors the web dashboard, including the bracket view, payments tab, and AI projections.

Related Services

• Machine Learning
• AI Strategy

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