The Rookie Debut Patch is a uniform patch introduced by Fanatics for 2023 MLB prospects and rookies — worn on the jersey during a player's very first Major League game. That's right: this patch was on the player during the actual debut.
Topps turned this into the Rookie Debut Patch Autograph (RDPA) card, which first appeared in 2023 Topps Chrome Update Series Baseball. The RDPA quickly became one of the most significant new card types in the hobby because it combines a piece of authentic debut-game memorabilia with an autograph.
The Rookie Debut Patch is also one-third of the Three Kings trifecta — making it essential for collectors chasing the ultimate player collection.