Cooper Flagg 1/1 Rookie Debut Patch Auto Heads to Auction

Cooper Flagg 1/1 Rookie Debut Patch Auto heads to Fanatics Collect

The multimillion dollar 1/1 Cooper Flagg NBA Rookie Debut Patch Auto card is headed to auction after being consigned to Fanatics Collect for its September Premier Auction, scheduled for Sept. 10-24.

The card quickly became one of the most talked-about pieces in the hobby after it was pulled from a box of Topps Chrome Updates Basketball on Aug. 10 during a box break at a local card shop in Rhode Island. The pull set off an intense bidding war for what is being viewed as one of the most coveted chase cards to reach the basketball card market.

What makes the Flagg Debut RPA so significant

The card is a 1/1 Rookie Debut Patch Auto featuring Flagg’s autograph and a patch from his first NBA game jersey. It was the top prize in the new set and is expected to rank among the most valuable basketball cards in hobby history.

The card also received a PSA Gem Mint 10 grade, adding another layer of significance to an already headline-grabbing card. With Flagg already generating major attention in the hobby, the combination of a true one-of-one format, autograph, and debut patch has made this card a centerpiece for collectors following the release.

How the bidding war unfolded

Collector Jason Williams pulled the card after buying a Dallas Mavericks spot in a box break for $515. Once the card surfaced, multiple offers followed almost immediately.

Among the offers reported were a $1.5 million Auction Cash Advance from Goldin and a $3.6 million offer from alternative asset company Alt. Even Flagg’s own Dallas Mavericks entered the picture, offering premium season tickets for 32 years along with a package of Flagg collectibles and other team perks.

Those offers pushed the estimated value of the card into the $5 million to $6 million range, but Williams initially declined and said he planned to keep the card.

Fanatics Collect ultimately secures the consignment

Fanatics Collect VP of Marketplace Kevin Lenane tried to reach Williams through the Rhode Island card shop, but when that effort did not work, he traveled by ferry and Uber from Connecticut to Rhode Island. Another Fanatics Collect team member flew in from Los Angeles.

After a phone conversation, Williams agreed to meet at the shop, where he and the Fanatics Collect team spent roughly 12 hours in discussions before he agreed to consign the card to Fanatics Collect.

The card will now be part of the September Premier Auction, giving collectors and investors a chance to bid on one of the most closely watched modern basketball cards to surface this year.

Three top rookie Debut RPAs in one auction

The Flagg card will not be the only major rookie Debut RPA in the auction. Fanatics Collect said the event will also feature 1/1 Debut RPAs of 2025-26 rookies Dylan Harper and Kon Knueppel, bringing three of the top NBA rookie cards together in a single sale.

That lineup adds even more attention to an auction already positioned around one of the hobby’s biggest modern basketball cards. With Flagg, Harper and Knueppel all drawing strong interest, the September Premier Auction is set to be a key event for collectors tracking the top end of the basketball card market.

Topps Chrome Updates Basketball and the rookie card market

Topps Chrome Updates Basketball has already become a focal point for collectors because of its Rookie Debut Patch Autos and other chase cards. The Flagg pull only intensified interest in the product and in the broader market for star rookie cards.

According to hobby experts, the Debut RPA cards of Flagg, Harper and Knueppel have already set records in the red-hot basketball card market, and all three could top $1 million. The auction will provide another important marker for how far demand has pushed the highest-end rookie cards in the current market.

For collectors following the rise of Flagg and the most sought-after modern basketball hits, the September Premier Auction will be one of the most closely watched sales of the year.