‘Guys Like That Never Fail’: Doc Rivers Praises Dallas Mavericks Rookie Cooper Flagg’s Competitiveness

Grant AfsethNovember 10, 2025November 10, 2025no comment

Photo by Stacy Revere/Getty Images

Milwaukee Bucks head coach Doc Rivers has seen enough of Cooper Flagg to recognize something special — not just in talent, but in mentality.

Speaking before Monday’s matchup between the Bucks and Mavericks, Rivers said the 18-year-old forward’s combination of competitiveness and willingness to learn makes him the type of player who simply won’t fail.

“What I love about him — absolutely love — is his competitiveness,” Rivers said. “In the history of our game, guys with that much athleticism, that much competitiveness, and that willingness to learn never fail. They just don’t. He’s going to keep getting better because he wants to, and he’s going to work at it.”

Through his first 10 NBA games, Flagg has averaged 13.9 points, 6.6 rebounds, and 3.0 assists, showing flashes of elite instincts and effort beyond his years.

Doc Rivers on Cooper Flagg’s NBA Adjustment: “It’s Tough — It’s Mental”

Rivers said one of the hardest adjustments for young players entering the league is learning how to handle losing — a reality most top prospects have never faced before.

“Every NBA player goes through that,” Rivers said. “Most of these guys are All-Americans in college, which usually means their teams were pretty good. Then they get drafted to high spots in the NBA, and those teams aren’t good yet. It’s tough — it’s mental. But it’s all about character, and he seems like a high-character guy.”

Flagg’s first few weeks have tested that, as the Mavericks entered the matchup at 3–7 amid injuries to several key players. But Rivers said the challenge of being a foundational piece for a young, reshaping team is something that builds leadership faster than comfort ever could.

Doc Rivers’ Respect for the Intangibles

As a coach who has spent decades working with stars like Chris Paul, Kevin Garnett, and Kawhi Leonard, Rivers said Flagg’s inner drive is what stands out most.

“It’s one thing to have talent,” Rivers said. “But when you see someone who’s young, ultra-competitive, and actually enjoys learning — that’s the difference between being good and being great. Cooper’s got that.”

While he admitted he hasn’t seen Flagg play often, Rivers said what he’s observed — particularly the intensity and joy he brings — reminds him of the traits shared by all elite players.

“He’s a Duke guy, so you know he’s been coached,” Rivers said with a grin. “But the way he competes — that’s not something you teach. That’s just in him.”

For Rivers, the message was simple: talent alone doesn’t guarantee success, but work ethic and character do.

“He’s just going to keep getting better because he wants to,” Rivers said. “That’s what separates guys like him from everyone else.”

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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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‘Guys Like That Never Fail’: Doc Rivers Praises Dallas Mavericks Rookie Cooper Flagg’s Competitiveness