The memorabilia market has reached a new fever pitch as Cooper Flagg’s NBA debut game-worn jersey sold privately for $1 million, Sotheby’s announced on Thursday. The sale officially surpasses the previous rookie debut record held by Victor Wembanyama, cementing Flagg’s status as the most sought-after young collectible icon in recent history.+1
Surpassing the Wembanyama Benchmark
The Dallas Mavericks rookie wore the jersey during the first half of his regular-season debut against the San Antonio Spurs on October 22, 2025. This $1 million price tag comfortably eclipsed the $762,000 fetched by Victor Wembanyama’s debut jersey in November 2023.
While the Wembanyama sale occurred through an open auction, Sotheby’s opted for a private sale for Flagg’s memorabilia due to what they described as “organic” and overwhelming demand from high-end collectors.
The Next “American Icon”
“I’m not quite sure that I’ve seen anything quite like this demand since LeBron James,” said Brahm Wachter, head of modern collectibles at Sotheby’s. Experts suggest that collectors view Flagg not just as a star player, but as a potential generational American icon, driving the value of his rookie season items to unprecedented heights.
The sale marks the highest known price for any Cooper Flagg collectible to date, signaling a massive shift in the sports memorabilia landscape as investors increasingly chase “rookie-season-firsts” alongside traditional assets like trading cards.