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Cooper Flagg has set yet another record.

A jersey the Dallas Mavericks phenom wore in his NBA debut earlier this season sold privately this month for $1 million, auction house Sotheby’s announced Thursday.


  Cooper Flagg made his debut on Oct. 22 when the Mavericks played the Spurs at American Airlines Center in Dallas. Getty Images Cooper Flagg made his debut on Oct. 22 when the Mavericks played the Spurs at American Airlines Center in Dallas. Getty Images

The price tag makes it not only the most expensive Flagg memorabilia to date, but also the costliest jersey ever sold through NBA Auctions, besting the $762,000 figure Victor Wembanyama’s rookie-debut threads netted in 2023, Sotheby’s added.

Flagg donned the white-and-blue uni on Oct. 22, when the Mavericks faced the Spurs at American Airlines Center in Dallas, Texas.


  Flagg’s #32 debut jersey sold privately for $1 million earlier this month, Sotheby’s announced. Sotheby's Flagg’s #32 debut jersey sold privately for $1 million earlier this month, Sotheby’s announced. Sotheby's

The former Duke star, who was just 18 years old at the time, played 32 minutes and scored 10 points on 4-of-13 shooting. He added 10 rebounds and one steal. The Mavericks got blown out, 125–92.

Flagg went on to have a stellar first half of the season, averaging 20.4 points, 6.6 rebounds and 4.1 assists per contest in 49 games before the NBA’s All-Star break.

“The $1 million result for Cooper Flagg’s rookie debut jersey is a powerful testament to the
significance collectors place on true ‘first moments’ in sport,” said Brahm Wachter, Sotheby’s head of modern collectables.


  The Cooper Flagg debut jersey is now the Mavericks phenom’s most expensive piece of memorabilia. Sotheby's The Cooper Flagg debut jersey is now the Mavericks phenom’s most expensive piece of memorabilia. Sotheby's

“This jersey captures the very beginning of a special career, one carrying huge expectations and excitement.”

Several other rookie debut jerseys, including ones worn by 76ers guard V.J. Edgecombe, Hornets guard Kon Knueppel and Spurs guard Dylan Harper, will go up for sale in an “NBA Rookie Debut Auction” next month, Sotheby’s said.

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