THE MOST COLLECTED BASE SET IN HOCKEY! Series 1 sports the first 250 cards of the 2025-26 Upper Deck Base Set. It includes 198 veteran cards, 49 Young Guns® cards and three checklist cards. The iconic Young Guns® are the most anticipated rookie cards of the season and the Series 1 checklist is loaded with high-end rookies! Keep an eye out for stunning Outburst Silver parallels of the complete Base Set!