Cooper Flagg’s rookie card chase has turned into a full-blown treasure hunt, and the Dallas Mavericks are putting a wild prize on the table to keep it in-house.
Topps released its Chrome Update Basketball set on Thursday with Flagg’s 1-of-1 Rookie Debut Patch Autograph as the headline card, and it’s exactly what it sounds like: the jersey patch from his NBA debut paired with his autograph. That piece of memorabilia is now tucked into one random pack, and the Mavericks want it back enough to offer a 32-year season ticket package to the person who finds it.
The card is tied to a rookie season that already put Flagg in rare company. The 19-year-old averaged 21.0 points, 6.7 rebounds, 4.5 assists and 1.2 steals over 70 starts in 2025-26, and he became the second-youngest Rookie of the Year winner in NBA history behind LeBron James.
Flagg remembered the signing process with a little more tension than usual. Speaking to The Athletic, he said, "I was a little nervous... that one was a little nerve-wracking."
The financial side of this chase is getting absurd in a hurry. Sports Cards Investor founder Geoff Wilson told ESPN he originally put the card at $1.5 million, but now believes it could reach as much as $5 million at auction. Private collectors have already dangled cash bounties of up to $3 million for whoever pulls it.
Dallas didn’t wait around for the market to decide its fate. On the day the set launched, the Mavericks posted a public trade offer centered on Flagg’s jersey number and made their pitch to anyone lucky enough to uncover the card.
"WANTED: THE ONE OF ONE.
The Cooper Flagg Rookie Debut Patch Autograph Card is officially out there.
If you have it, we want it. Claim the bounty.
Good luck! #MFFL pic.twitter.com/5CFPTQSyfc
- Dallas Mavericks (@dallasmavs) August 6, 2026"
The package is stacked: two lower-level season tickets for the next 32 years, a signed game-worn rookie jersey, a postgame photo with Flagg and private photoshoots with the Rookie of the Year and Larry O'Brien trophies.
For now, the card is still out there somewhere, and the Mavericks are making sure every collector knows exactly what they’re chasing.
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