A one-of-a-kind Cooper Flagg rookie card has been discovered in Rhode Island, drawing global attention in the sports collectibles market. The card, featuring a patch from Flagg’s NBA debut jersey and his signature, was unveiled Monday night during a live stream by members of RhodyBreakers, a group within the Baseball Cards of Rhode Island card shop.
The discovery follows Flagg’s recent selection as the NBA Rookie of the Year for the 2025-26 season, a designation that has heightened demand for his rookie cards. The card is part of the 2026 Topps Chrome Update Basketball set, which includes rookie debut patch autograph cards from the 2025 NBA Draft class.
The Dallas Mavericks have responded to the card’s discovery by offering a package valued at over $1 million to acquire it. The offer includes:
- Two lower-level season tickets for 32 years
- A signed Flagg game-worn jersey
- A postgame photo with Flagg
- A private photoshoot with the NBA Rookie of the Year Trophy and the Larry O’Brien Trophy
- A VIP tour of the Mavericks’ practice facility and American Airlines Center, including a team meet-and-greet
- A private basketball experience for up to 10 guests at American Airlines Center
- A VIP experience at the Mavericks’ road game in Boston, including airfare, hotel, and game tickets for the Mavericks-Celtics matchup
The Mavericks’ offer has been framed as a “1 of 1 for 32” package, referencing the 32-year duration of the season tickets. The team has not publicly disclosed whether the offer is contingent on the card’s auction outcome or if it is a direct purchase proposal.
The card’s discovery comes amid a broader surge in the sports memorabilia market, where similar high-value items have set records. For example, a one-of-a-kind Paul Skenes rookie card sold for $1.11 million in 2024. Flagg’s card is expected to exceed that value due to his Rookie of the Year award and the patch from his NBA debut jersey, which sold separately for $1 million at auction.
The 2026 Topps Chrome Update Basketball set, which includes Flagg’s rookie card, was released as part of the broader collectibles market’s focus on rookie debut patch autograph cards. The set features cards from the 2025 NBA Draft class, with Flagg’s card being one of the most anticipated due to his rapid rise to Rookie of the Year.
Ownership of the card has not been publicly disclosed, and it remains unclear whether the finder intends to auction the card or accept the Mavericks’ offer. The card’s value is expected to fluctuate based on market demand and Flagg’s future performance in the NBA.
The discovery has reignited discussions about the ethics and value of sports collectibles, particularly one-of-a-kind items tied to high-profile athletes. While some collectors prioritize financial returns, others may value the card’s sentimental or personal significance, especially given Flagg’s connection to New England.
The Mavericks’ aggressive pursuit of the card reflects the broader trend of sports franchises engaging with fan culture and memorabilia, as teams seek to enhance fan experiences and strengthen brand loyalty through exclusive collectibles and experiences.