The hype around Cooper Flagg is officially historic. Before his rookie season is even halfway done, the Dallas Mavericks’ young phenom has already re-written the record books off the court.
In a stunning private sale handled by Sotheby’s, the game-worn jersey from Flagg’s highly anticipated NBA debut has sold for an eye-watering $1 million. This massive sale sets a new all-time record for the most expensive NBA debut jersey ever sold, cementing Flagg’s status as a generational superstar in the making.
The Million-Dollar Moment
The jersey in question is a piece of basketball history. Flagg wore the white and blue Mavericks home uniform during the first half of his very first regular-season game on October 22, 2025, against the San Antonio Spurs.
It wasn’t just any debut performance, either. The 19-year-old forward immediately showcased his versatile skillset, recording a double-double with 10 points and 10 rebounds on the league’s biggest stage.
Smashing the Previous Record
Just how impressive is this $1 million price tag? It completely obliterated the previous record held by none other than Victor Wembanyama. The French sensation’s debut jersey from 2023 sold for $762,000, a figure that seemed insurmountable at the time.
Flagg’s jersey selling for over 30% more than Wembanyama’s is a powerful testament to the unprecedented excitement surrounding his career. It highlights the immense value collectors now place on a player’s true “first moments” in the league.
A New Era of Collectibles
This sale is more than just a big number; it signals a shift in the sports memorabilia market. For a current rookie’s jersey to command a seven-figure sum is a rare feat, typically reserved for game-worn items from all-time legends later in their careers.
Brahm Wachter, Sotheby’s Head of Modern Collectibles, put it perfectly: “This jersey captures the very beginning of a special career, one carrying huge expectations and excitement”.
With Flagg already breaking on-court records and now shattering auction records, one thing is clear: we are witnessing the beginning of something truly special.
