By NBA Insider | February 4, 2026
For most NBA rookies, a Tuesday night game in February is just another date on the calendar. But for Cooper Flagg, this one was personal.
Growing up in Newport, Maine, Flagg didn’t just watch the NBA; he studied the Boston Celtics. His parents, Kelly and Ralph, raised him on the gospel of the 80s Celtics—the grit of Larry Bird, the footwork of Kevin McHale, and the selfless, team-first basketball that defined a dynasty.
On Tuesday night, the childhood fan became the adversary. In his first-ever career matchup against the team he idolized, Flagg didn’t just show up—he made history.
A Historic Performance in Defeat
The hype leading up to this game was palpable, with outlets like WABI TV highlighting the emotional weight of the moment for the Maine native. Flagg delivered on every ounce of that anticipation.
Despite the Dallas Mavericks falling 110-100 to the defending champions, Flagg was spectacular. He poured in 36 points, grabbed 9 rebounds, dished out 6 assists, and added 2 blocks for good measure.
In doing so, the 19-year-old etched his name into the record books yet again. This marked his third consecutive game with 30+ points, making him the first teenager in NBA history to achieve that feat. Coming off a 49-point explosion against Charlotte and a 34-point masterpiece against Houston, Flagg has officially turned “The Rookie Wall” into a myth.
Respect from the Champs
The Celtics, however, showed why they are the class of the league. Led by Jaylen Brown (33 points, 11 rebounds) and a spark from Payton Pritchard (26 points off the bench), Boston withstood Flagg’s individual brilliance with a balanced, veteran attack.
Boston’s defense, known for suffocating opponents, clearly respected the rookie. They threw multiple looks at him, but Flagg’s “Larry Bird influence” was on full display. He navigated screens, found open teammates, and hit tough shots over elite defenders.
“He’s relentless,” one Celtics analyst noted. “You can see the Celtics DNA in his game—the way he moves the ball, the way he competes. He’s one of us, even if he’s wearing a Mavs jersey.”
The Paradox Continues
As historic as Flagg’s night was, it highlighted the ongoing struggle in Dallas. The Mavericks have now lost five straight games, falling to 19-31 on the season.
It is a strange reality for Mavs fans: they are witnessing one of the greatest rookie seasons of all time, yet the team cannot buy a win. With key teammates out and the trade deadline looming, Flagg is being asked to carry a heavy load—perhaps too heavy for a teenager, no matter how talented.
Circle the Date: March 6
While Tuesday night was special, the real homecoming is still a month away.
On March 6, Cooper Flagg will step onto the parquet floor at TD Garden for the first time as a pro. If Tuesday’s performance in Dallas was any indication, the atmosphere in Boston is going to be electric. Maine fans will flood the arena, torn between cheering for their hometown hero and their beloved Celtics.
For now, Cooper Flagg has proven one thing: He belongs on the same court as the champions he grew up watching. In fact, he might just be coming for their throne sooner than we think.
