2026 Topps Series 1 Seattle Mariners Team Set featuring cards of Cal Raleigh, Julio Rodriguez '91 Relic and Rookie Cole Young. This trading card set is an original release by Topps and includes various players from the Seattle Mariners for the 2026 MLB season. Made of card stock and in standard size, these sports trading cards are a part of the Major League Baseball league and showcase the MLB in all their fight for the top. The set includes English language cards and is a must-have for collectors and fans of the Seattle Mariners.