Cooper Flagg becomes the NBA’s new phenomenon after surpassing LeBron

Cooper Flagg left behind early-season doubts and delivered a performance already part of league history. The Mavericks rookie exploded for 42 points against the Jazz, though Dallas fell 140-133 in a thrilling contest.

The mark was not only a personal best, it also made him the first 18-year-old to score more than 40 points in an NBA game. According to Sportingnews, Cooper Flagg’s record topped LeBron James’ 37 points from 2003 with the Cavaliers.

Offensive showcase

Cooper Flagg displayed his full arsenal: drives to the rim, mid-range shots, and an impressive ability to reach the free-throw line, where he hit 15 of 20 attempts. He closed with 13 of 27 from the field, plus seven rebounds, six assists, one steal, and two blocks.

Cooper Flagg in just one half vs. Utah 😮

🔹 24 PTS
🔹 4 REB
🔹 4 AST pic.twitter.com/hZAZCfym6Y

— NBA on ESPN (@ESPNNBA) December 16, 2025

The forward had already shown flashes weeks earlier with 35 points against the Clippers. This time, Cooper Flagg raised his production to a level that boosted Dallas despite the loss.

Game context

Cooper Flagg scored 24 points in the first half, highlighted by a left-handed scoop that electrified the crowd. Later, in crunch time, he forced overtime with a three-point play that came with confidence and energy.

In the extra period, the rookie added two more points, but Dallas couldn’t stop Keyonte George, who dropped 37 for Utah.

COOPER FLAGG IS HIM!!!! AND1 and he Has 39pts!! pic.twitter.com/lTrl6usJy0

— MavsHighlights (@MavsHighlights) December 16, 2025

A record shared with legends

Cooper Flagg now dominates the scoring list for 18-year-olds alongside LeBron James. Between them, they occupy the top 14 spots in history, followed by names like Dwight Howard and Kobe Bryant.

The impact of Cooper Flagg confirms why he was the number one pick in the draft. His breakout not only excites the Mavericks, it also signals the start of a new era in the NBA.