Sotheby's Sells Cooper Flagg's Dallas Mavericks Rookie Debut Jersey for a Record $1 Million USD

Summary

• Dallas Mavericks rookie Cooper Flagg’s debut jersey recently sold in a private Sotheby’s transaction for a staggering $1 million
• The record-breaking white and blue uniform was worn during the first half of the young star’s first official NBA game against the San Antonio Spurs
• The monumental sale easily surpassed the previous rookie debut jersey record held by Victor Wembanyama

The Dallas Mavericks Cooper Flagg Rookie Debut Jersey is officially making history off the court, recently selling for an unprecedented $1 million USD. Handled privately through Sotheby’s, the game-worn piece has set a new benchmark for sports memorabilia, underscoring the immense hype and collector demand surrounding the 19-year-old rising star’s promising NBA career.

According to reports from ESPN‘s Dan Hajducky, the white and blue home jersey was worn by Flagg during the first half of his October 22, 2025 debut matchup against the San Antonio Spurs, where he secured a double-double with 10 points and 10 rebounds. Brahm Wachter, Sotheby’s head of modern collectibles, noted in a statement that the monumental final price tag is a powerful testament to the significance collectors place on true “first moments” in sports history, capturing the very beginning of a highly anticipated athletic journey.

This historic transaction officially shatters the previous rookie debut jersey record of $762,000 USD, which was established by Victor Wembanyama in November 2023. Flagg’s stellar rookie campaign—averaging 20.4 points, 6.6 rebounds, and 4.1 assists per game—has definitively cemented his status as a premier name in the modern collectible market. Looking ahead, Sotheby’s will capitalize on this momentum by hosting a dedicated NBA Rookie Debut Auction from March 17 to March 23, featuring first-game jerseys from other prominent rookies including VJ Edgecombe, Kon Knueppel, Derik Queen, and Dylan Harper.