Number Retired
A baseball fan companion that catalogs every jersey retirement and Hall of Fame ceremony across MLB, with career retrospectives and a collector's marketplace for memorabilia.
Die-hard baseball fans who follow multiple franchises and collect signed memorabilia
- Calendar of upcoming retirements and inductions across all 30 MLB clubs with hometown ticket integrations
- Career-deep retrospective pages for each honored player with stats, video clips and personal quotes
- Personal collection log with rarity tags and authenticated-memorabilia listings
- Push alert when a favorite team's next number retirement is officially announced
Longoria's Rays ceremony shows that jersey retirements are increasingly emotional multi-day fan events worth more than a single news article.
Baseball-Reference and Wikipedia both maintain comprehensive retired-number lists, MLB.com publishes team retirement pages, and Hall of Fame inductions draw sustained annual coverage, indicating real but niche fan interest in retirement/HOF ceremonies.MLB Retired Uniforms | Baseball-Reference.com ↗Every MLB team's retired numbers ↗
No single app combines retirement catalog + ceremony coverage + retrospectives + collector marketplace; existing players (Baseball-Reference for data, MLB app for coverage, Goldin/Pristine for collectibles) cover pieces separately, leaving an integration gap.Goldin | The Global Go-To For High-End Collectibles ↗MLB Apps - MLB.com ↗
Memorabilia marketplaces like Goldin handle high-end transactions and Pristine Marketplace lists 26,000+ authenticated items, proving willingness to pay; however, launching a competing marketplace requires significant trust/authentication infrastructure and competing with established players.MLB Memorabilia | Authentic Signed Baseballs, Jerseys & Cards ↗Goldin | The Global Go-To For High-End Collectibles ↗
Baseball has century-plus cultural staying power, annual Hall of Fame inductions, and a durable collectibles market with established authentication industry, supporting long-term relevance.Home | Baseball Hall of Fame ↗List of Major League Baseball retired numbers ↗
Data layer (retired numbers, ceremonies, retrospectives) is mostly publicly available and scrapable; marketplace component is significantly harder due to authentication, payments, two-sided network effects, and need to compete with Goldin/Pristine.Goldin Auction ↗