See photos from Cooper Flagg’s first preseason game as a Dallas Maverick

By Christopher Torres

Updated October 7, 2025 8:25 AM

Mavericks forward Cooper Flagg (32) is introduced prior to the first half of a preseason NBA game between the Dallas Mavericks and Oklahoma City Thunder at Dickies Arena in Fort Worth on Monday, Oct. 6, 2025. Christopher Torres ctorres@star-telegram.com

Cooper Flagg made his much-anticipated Mavericks debut Monday night at Dickies Arena, showing flashes of the two-way game that made him the No. 1 pick while helping Dallas to a 106-89 preseason victory over the Oklahoma City Thunder.

Flagg finished with 10 points and a handful of eye-catching plays that energized the crowd and hinted at the role he could play as the regular season approaches.

The 18-year-old logged just 14 minutes but filled the box score, posting 10 points, six rebounds, three assists and a block while shooting efficiently.

Mavericks forward Cooper Flagg warms up prior to the first half of a preseason NBA game between the Dallas Mavericks and Oklahoma City Thunder at Dickies Arena in Fort Worth on Monday, Oct. 6, 2025. Christopher Torres ctorres@star-telegram.com

Even in a limited preseason role, his energy shifted the pace — the kind of presence that can quietly change a team’s rhythm.

Flagg’s versatility stood out most. At 6-foot-9, he defended multiple positions, crashed the glass, and spaced the floor with confidence. His ability to cut without the ball, rotate early on defense, and find open shooters gave Dallas fans a glimpse of a player whose impact goes beyond the box score.

The Mavericks continue their preseason Saturday when they host the Charlotte Hornets at American Airlines Center.