Overview
Ventra Ranking is a badminton tournament management system built for an amateur badminton community in Ho Chi Minh City. The system serves over 500 athletes competing in weekly tournaments — from qualifying rounds through to finals — with automated bracket generation and ELO rankings that update in real time after every match result.
Before Ventra Ranking, tournament organizers managed everything manually with Excel spreadsheets, announced results through Zalo group chats, and calculated rankings by hand — time-consuming and error-prone. Athletes had no way to track their competitive history or measure progress over time.
The Challenge
Badminton tournaments run multiple brackets simultaneously (men's singles, men's doubles, mixed doubles), each with 32 to 64 athletes. The tournament format is complex: group stages combined with winner and loser brackets under a double elimination system.
The primary technical challenge was displaying results in real time to all viewers — athletes, spectators, and organizers — the moment a referee entered a score, with no perceptible delay. The system also had to remain stable under the unreliable WiFi conditions typical inside badminton halls.
Our Solution
Ventra Rocket built the system with Laravel Reverb (Laravel's official WebSocket server) as the real-time backbone. When a referee updates a score, an event is immediately broadcast to every client watching that bracket. The Vue.js frontend updates the UI smoothly without any page reload.
The ELO rating system was implemented to professional standards with a K-factor adjusted by player tier: K=32 for beginners, K=24 for intermediate, K=16 for advanced. ELO scores update automatically once an admin confirms the match result.
Key Features
- Real-time Bracket Display: Brackets update instantly via WebSocket when results come in — no refresh needed, no delay visible to spectators.
- ELO Ranking System: Professional ELO algorithm that accounts for opponent strength, head-to-head history, and a season-based adjustment coefficient.
- Tournament Generator: Automatically generates brackets from the registered athlete list, supporting multiple formats: single elimination, double elimination, and round robin.
- Player Profile & History: Individual athlete pages showing match history, win/loss statistics, ELO rating chart over time, and earned titles.
- Live Score Board: Leaderboard display designed for large screens at the venue, showing the real-time top 20 ranked athletes.
Impact & Results
Ventra Ranking has served 500+ athletes across weekly tournaments for more than 8 consecutive months. Time spent by organizers on administrative work dropped from 6 hours per week to 45 minutes. Disputed results fell to near zero because every outcome is recorded clearly and transparently.
Athletes particularly value the match history feature — many use it to analyze weaknesses and refine their playing style. System uptime has been 99.8% across 8 months of operation.
Tech Stack Details
Laravel with Reverb (the official Laravel WebSocket server) allows real-time functionality without a separate Node.js service, simplifying deployment. Vue.js 3 with Composition API and Pinia store manages real-time state clearly and makes debugging straightforward. MySQL with optimized indexes handles complex ELO scoring queries and filtered match history lookups efficiently. Redis as a cache layer for leaderboards and session management ensures fast responses even under concurrent peak load.