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‘He’s Only 18’: Cooper Flagg Makes Massive NBA History On Back-to-Back Nights In Los Angeles

Grant AfsethNovember 30, 2025November 30, 2025no comment

Cooper Flagg, Dallas Mavericks, James Harden, LA Clippers, NBA

Photo by Katelyn Mulcahy/Getty Images)

Dallas Mavericks forward Cooper Flagg packed a weekend’s worth of NBA history into two nights in Los Angeles, turning a back-to-back against the Lakers and Clippers into a defining early chapter of his rookie season.

On Friday, the 18-year-old became the youngest player in league history to record 10 assists, finishing with 11 at Crypto.com Arena. Twenty-four hours later at Intuit Dome, he added an even more startling line to his résumé: 35 points, the most ever scored by an 18-year-old in an NBA game, leading an injury-ravaged Mavericks team to a 114-110 win over the Clippers.

“It’s an honor,” Flagg said. “I just feel blessed to have this opportunity. I have incredible teammates and coaches around me who put me in positions to do this.”

A Breakout Night on a Battered Roster

Dallas entered Saturday short-handed, then lost starting forward P.J. Washington to a freak ankle injury in warmups after he stepped on a loose basketball. Klay Thompson — who was listed as out earlier in the day before being upgraded following a pregame workout — became one of the few veterans available around Flagg. Anthony Davis, Daniel Gafford, Dereck Lively II, Kyrie Irving, and Danté Exum were all out.

“That’s the reality right now,” Flagg said. “We’ve been unhealthy, had guys knocked up, but it’s next-man-up. I just listened to the voices around me. AD and Kai were on the bench helping me through everything, giving me advice.”

Flagg responded with the most assertive offensive showing of his career. He scored 12 points in the first quarter, reached 21 by halftime, and ended with 35 on 13-of-22 shooting. He repeatedly attacked the rim, finishing eight shots inside three feet and producing the highlight of the night when he crossed Ivica Zubac and dunked over him with both hands.

“Sometimes you just have to make the athletic play and raise up on top,” Flagg said of the dunk. “Just getting downhill, playing with pace, playing with poise.”

Jason Kidd said Flagg’s ability to balance aggression and decision-making is evolving quickly.

“He did it all tonight,” Kidd said. “Not just the scoring — he created opportunities for others, made plays defensively, then stepped up and made free throws late. His composure was impressive.”

Early in the fourth quarter, the Clippers forced turnovers by jumping his spin moves. Flagg said that in real time, he felt the adjustment — and responded accordingly.

“I knew they were coming on that spin,” he said. “I had some careless turnovers. You’ve got to be smarter. Once you figure out what teams are trying to do to you, it opens a whole new world.”

Flagg scored eight points in the final 2:47, including the free throws that sealed the win.

The performance punctuated what has already been a highly productive start to his career: Flagg has averaged 16.7 points, 6.6 rebounds, and 3.5 assists in 20 games this season, emerging as one of the NBA’s most impactful teenage contributors in years.

A Veteran’s Perspective on a Rising Star

Thompson — who scored 17 of his 23 points in the fourth quarter — said watching Flagg navigate the physicality of Kawhi Leonard and Nicolas Batum on a back-to-back showed why his ceiling is so high.

“Cooper’s upside is limitless,” Thompson said. “He has every tool to be great. Sometimes I can’t believe he should still be in college.”

Flagg acknowledged the magnitude of matching up with Leonard, someone he studied throughout his development.

“He’s someone I wanted to model my game after,” Flagg said. “Playing hard, being an incredible two-way player, playing both sides of the ball at a really high level — he’s done that for a long time.”

Thompson’s hot streak gave Dallas the scoring balance it desperately needed, but even he couldn’t ignore the significance of witnessing Flagg’s breakthrough from up close.

“His superstar potential is obvious,” Thompson said. “We all can be witnesses to what he’s going to do for a long time.”

Flagg said advice from teammates has helped him handle responsibility at a pace most rookies never experience.

“The biggest thing is not second-guessing myself,” he said. “I’m here for a reason. Be who I am.”

He also said the spacing and pace of the NBA — especially with shooters like Thompson on the floor — have been the biggest on-court adjustments.

“With Klay spacing the floor like he did tonight, it opens lanes for everyone,” Flagg said. “More space, more shooters — less help. It lets me get downhill and make reads.”

That combination — elite spacing next to him and elite patience inside him — helped power one of the most historic rookie weekends the league has seen.

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Grant Afseth

Senior Writer

Grant Afseth is a Senior Writer for DallasHoopsJournal.com, where he leads in-depth coverage of the Mavericks, Wings, and more. Between a focus on the latest news, closer looks at games, front office strategy, and more, Afseth provides objective coverage. Afseth contributes broader NBA coverage across platforms and has been cited in national outlets for his reporting and analysis. With nearly a decade of journalism experience, Afseth has covered the NBA and WNBA for multiple major outlets, including Athlon Sports, BallIsLife, Sportskeeda, and RG.org. He previously reported on the Indiana Pacers for CNHI’s Kokomo Tribune and the Mavericks for FanNation.

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