The 2026 Topps Series 1 Greatest Hits is a sports trading card set features various baseball players such as Christian Yelich, Andrew McCutchen, and Cal Raleigh. Manufactured by Topps, this set includes insert cards highlighting standout players from the Major League Baseball season of 2026. The featured players belong to teams like the Seattle Mariners and Milwaukee Brewers, making this collection a must-have for baseball card enthusiasts and fans of these teams.