Cooper Flagg Just Signed the Most Important Card at Fanatics Fest

What Happened at Fanatics Fest?

At the third annual Fanatics Fest (a big fan and sports collectibles party), ESPN’s Kevin Negandhi told the crowd some exciting news:

• Cooper Flagg, the superstar of the Dallas Mavericks and the current NBA Rookie of the Year, just signed his special rookie card right offstage.
• This wasn’t just any card. It was his one-of-one numbered rookie debut patch autograph card (we’ll explain what that means below!).

Mike Mahan, the CEO of Fanatics Collectibles, said:

"It’s definitely the most important thing we’ve had signed at Fanatics Fest."

He also said Flagg loves cards and understood how special this moment was.

What Is a Rookie Debut Patch Autograph Card (RDPA)?

Think of it like this:

• When a player plays their very first game, they wear a special patch (a small piece of fabric) on their jersey.
• That patch is cut off and put onto a trading card.
• The player then signs the card.
• A "one-of-one" means there is literally only one of that card in the whole world.

Mahan says these cards connect fans to an athlete’s biggest moments — like the first time they step on the court or break a record.

Big Basketball Card News

Here’s what you need to know:

• Fanatics got the exclusive license to make NBA trading cards starting last October.
• Cooper Flagg is the face of the first group of basketball RDPA cards.
• These are part of 2026 Topps Chrome Update Basketball, coming out August 6.
• Flagg’s card — plus RDPA cards from his classmates Kon Knueppel, Dylan Harper, Ace Bailey, and Derik Queen — will be released as redemption cards (you get a code and send it in to receive the real card).

Important: Mahan calls Flagg’s card the most anticipated basketball card "in a long, long time."

How Much Could It Be Worth?

Let’s look at some money facts:

• The most paid for a Flagg card so far is $366,000 (at a March auction).
• The jersey he wore in the first half of his NBA debut — where the patch came from — sold for $1 million in February.
• For comparison: Paul Skenes’ baseball RDPA sold for $1.11 million last year.

Geoff Wilson, founder of Sports Cards Investor, said:

1. When Skenes’ card sold, people saw how valuable these cards could be.
2. He first guessed Flagg’s card might hit $1.5 million.
3. Now he says: $5 million. He calls it "definitively his best card."

What’s Next for Fanatics?

Mahan shared what the company is exploring:

• TCG (short for "trading card games" like Magic: The Gathering and Pokémon) is an area they’ll look into.
• They may mix sports together (multisport crossovers) thanks to their rights.
• They’re investing in technology to make collecting easier — like a single app that has everything a collector needs.

Important: Fanatics’ main goal is to "work with athletes and bring them into the fold." A cool side effect? Athletes themselves now chase their own RDPA cards!

Mahan says:

"They could be massive collectors, they could not collect at all: Athletes want them. It’s become this iconic symbol."

Will Flagg Buy His Own Card?

Kevin Negandhi asked Flagg if he’d try to buy his own card once someone pulls it.

Flagg said:

"Maybe eventually. I might have to wait until I get my second contract, but maybe eventually."

Summary

Cooper Flagg — the NBA Rookie of the Year — just signed his one-of-one rookie debut patch autograph card at Fanatics Fest, called the most important item signed there yet. It’s part of the highly anticipated 2026 Topps Chrome Update Basketball release. Experts think it could sell for as much as $5 million. Fanatics is growing into new card areas and tech, and even players like Flagg want their own special cards.

FAQ

What does "one-of-one" mean?
It means there is only a single copy of that card made — you can’t find another one anywhere.

What is a redemption card?
It’s a card that gives you a code. You send the code to the company, and they mail you the actual signed card later.

Why are rookie debut patch cards such a big deal?
Because the patch comes from the jersey the player wore in their very first game, and the player signs it — making it a unique piece of history.

How much is Cooper Flagg’s card expected to sell for?
Expert Geoff Wilson now believes it could reach $5 million.

What is Fanatics planning for the future?
They plan to explore game cards like Pokémon, mix different sports, and build a helpful app for collectors.