Athlon Authentics, operated by RDB Holdings & Consulting LLC, is an online retailer specializing in sports collectibles and related memorabilia. Its broad catalog covers items connected to football, baseball, basketball, hockey, golf, racing, boxing, horse racing, soccer, tennis, wrestling, the Olympics, and other sports, alongside historical and celebrity collectibles. Shoppers can also browse trading card games such as Pokémon, Yu-Gi-Oh!, and Magic: The Gathering, as well as coins, toys, books, current and back issues of Athlon publications, and game-day books.

The store offers autographed and non-autographed items, engraved signature products, custom framing, and display cases. Its featured and clearance selections include signed posters, collectible cards, and sealed trading-card products. Customers can shop by category, search the catalog, review weekly specials, or contact the store for price quotes, availability, player options, and shipping questions.

Athlon Authentics provides online ordering and accepts phone and email orders; its Nashville-based customer service team is available by phone during listed weekday hours, with Saturday calls also invited