As a huge baseball fan and a developer, I often found myself jumping between multiple sites to track MLB The Show card prices, roster updates, live scores, and market trends. So I decided to build my own all-in-one solution: MLB27.com.
In this post, I'll share the tech stack, architecture decisions, and lessons learned from building a full-stack sports data hub.
The Problem
MLB The Show players know the pain: you need one site for live card prices, another for roster updates, a third for real MLB scores, and yet another for draft pick analysis. I wanted a single dashboard that brings everything together.
Tech Stack
I chose a modern, performance-focused stack:
- Frontend: Next.js with App Router for server-side rendering and fast page loads
- Database: Supabase (PostgreSQL) for real-time card price data and user accounts
- Data Sources: Multiple public APIs for live MLB scores, player stats, and market prices
- Hosting: Vercel for edge caching and global CDN
Key Features
Live Card Market Tracker
The core feature is real-time Diamond Dynasty card pricing. Users can search any player card and see current market values, price trends, and buy/sell recommendations.
Player Rankings & Roster Updates
I integrated official roster data so fans always know who's available, who's trending, and how cards are ranked across positions.
Real MLB Scores & Draft Tracker
Beyond the game, MLB27 tracks live MLB scores and provides a draft tracker during the MLB Draft season, keeping fans engaged year-round.
Market Insights & Guides
The site includes Diamond Dynasty guides and market analysis articles to help players make smarter buying and selling decisions.
Architecture Challenges
Rate Limiting API Calls
With multiple data sources, managing API rate limits was tricky. I implemented a caching layer with Redis to reduce redundant calls and keep response times under 200ms.
Real-Time Price Updates
Card prices change frequently. I used Supabase Realtime subscriptions to push price updates to connected clients without polling.
Lessons Learned
- Start with the data model first - Getting the card/market/player relationships right saved weeks of refactoring.
- Cache aggressively - Sports data has natural expiration. A 5-minute cache window reduced API costs by 80%.
- Mobile-first design matters - Over 60% of MLB The Show players access tools on their phone while playing.
What's Next
I'm working on adding community features like card collection sharing, price alert notifications, and a fantasy lineup builder.
Check out MLB27.com if you're an MLB The Show fan, and let me know what features you'd like to see!
Built with love for the baseball gaming community. Visit mlb27.com for live card prices, roster updates, MLB scores, and Diamond Dynasty guides.
Top comments (0)