Flagg's 10 20-point games before his 19th birthday are the second-most in NBA history behind only LeBron James, who has 14. Even if Flagg were to score 20+ in each of the final three games before he turns 19, he'd end up falling one short.

The NBA schedule on December 15 delivered a busy night filled with close finishes, big performances, and costly mistakes. Some teams stepped up when it mattered most, while others let wins slip away late.

Taking on the Utah Jazz, Flagg topped 40 points for the Mavericks, although Dallas fell 140-133. Still, Flagg's outing was historic; he set a new NBA record for points by an 18-year-old. Here's a look at Flagg's breakout night against the Jazz. MORE: Which teams are in the NBA Cup championship?

Flagg's 42 points tied Mark Aguirre for the most by a rookie in franchise history. Aguirre accomplished the feat in just his 9th game in the NBA against the Golden State Warriors back on November 14th, 1981, which was also a loss for the Mavs.

There was a lot of hype entering the 2025-26 NBA season around first overall pick Cooper Flagg. MORE: Deandre Ayton’s mom cooks incredible Jamaican holiday meal for Los Angeles Lakers And the former Duke Blue Devil showed exactly why on Monday with a historic display against the Utah Jazz.

The rebuilding process is accelerating for the Utah Jazz heading into their game with the Dallas Mavericks in Salt Lake City on Monday night.

Trade buzz has remained consistent around Utah Jazz forward Lauri Markkanen over the past several months, and even years, that have pinned multiple interested suitors and possible deals that could be in play to ship out the team's franchise cornerstone, and bring a big shake-up to their rebuild entirely.