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Mavericks' Cooper Flagg to be evaluated after Dusty May's first win

Flagg averaged 21 points as a rookie and 25.6 over his last 10 games for a Dallas team that went 26-56.

  • Flagg in 2025-26: 21 points, 6.7 rebounds, 4.5 assists
  • Last 10 games: 25.6 points per game
  • Mavericks went 26-56 last season

1 min read via Marc SteinHow this story was written

Keel Stats player card: Cooper Flagg, Dallas Mavericks

Dallas Mavericks forward Cooper Flagg will be evaluated over the next couple of days, coach Dusty May said after his first NBA win as coach, The Stein Line's Marc Stein reported Friday.

The report does not say what is being evaluated.

Flagg averaged 21 points, 6.7 rebounds and 4.5 assists in 70 games, all starts, in 2025-26. Over his last 10 games that season, he averaged 25.6 points.

Dallas went 26-56 in 2025-26 and finished 23rd of 30 teams with a net rating of -5.3. The Mavericks ranked 27th in offense and 20th in defense, and were outscored by 3.8 points per game with Flagg on the floor.

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Reported byMarc Stein

Marc Stein@TheSteinLine · The Stein Line

Mavericks coach Dusty May says after his first NBA win that Cooper Flagg "will be evaluated the next couple days." https://t.co/W7MGsgaJXN

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Marc Stein@TheSteinLine · The Stein Line

The Mavericks say Cooper Flagg underwent an MRI that revealed a mild left shoulder sprain. Flagg is out for tonight’s home opener against San Antonio and will be re-evaluated next week.

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Marc Stein@TheSteinLine · The Stein Line

The Mavericks, I’m told, are expected to list Kyrie Irving as questionable for tonight’s home opener as part of Irving’s ongoing left knee injury management on Dallas’ first back-to-back of the season. Dallas is already without Cooper Flagg due to a mild left shoulder sprain. https://t.co/b9ic21mUs8

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Marc Stein@TheSteinLine · The Stein Line

The Mavericks are now expected to soon rule out Kyrie Irving as well from tonight’s home opener … which would mean no Irving or Cooper Flagg for San Antonio’s visit. https://t.co/XsKMvrt2h7

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Marc Stein@TheSteinLine · The Stein Line

The Mavericks have already upgraded Cooper Flagg (mild left shoulder sprain) to questionable for Monday’s game at Miami but have ruled out Naji Marshall against the Heat after illness forced Marshall to miss much of the second half of Saturday night’s home opener. https://t.co/b9ic21nshG

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Marc Stein@TheSteinLine · The Stein Line

The Mavericks have now upgraded Cooper Flagg (mild left shoulder sprain) from questionable to probable for tonight's game at Miami after he went through the morning shootaround. https://t.co/ea8sSweHyN

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Marc Stein@TheSteinLine · The Stein Line

Mavericks coach Dusty May says Cooper Flagg is now a gametime decision for tonight's game and May expects him to go. The mild left shoulder sprain sustained Friday night in Indianapolis appears likely to sideline the reigning Rookie of the Year for just one game. https://t.co/6OVFtCMO1T

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Marc Stein@TheSteinLine · The Stein Line

Mavericks coach Dusty May says Cooper Flagg is now a gametime decision for tonight's game in Miami and May expects him to go. The mild left shoulder sprain sustained Friday night in Indianapolis appears likely to sideline the reigning Rookie of the Year for just one game. https://t.co/6OVFtCNlRr

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Marc Stein@TheSteinLine · The Stein Line

The Mavericks say Santi Aldama has been assigned to the Texas Legends to practice with the team as part of his return-to-play protocol.

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Marc Stein@TheSteinLine · The Stein Line

Acquired in July as part of a six-team trade, Santi Aldama has been sidelined since knee surgery in March and will get in some practice work with the Mavericks’ @nbagleague affiliate before making his Dallas debut. https://t.co/KL3zJuhw1d

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Marc Stein@TheSteinLine · The Stein Line

The Mavericks say CEO Rick Welts, who was lured out of retirement in December 2024 to lead the team’s new arena project, will step down at year’s end and be succeeded by former Timberwolves and 49ers CEO Ethan Casson on Jan. 1, 2027. Welts, 73, is a 2018 @Hoophall inductee who previously worked for the Warriors, Suns and league office dating the 1980s.

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Marc Stein@TheSteinLine · The Stein Line

The Mavericks say CEO Rick Welts, who was lured out of retirement in December 2024 to lead the team’s new arena project, will step down at year’s end and be succeeded by former Timberwolves and 49ers CEO Ethan Casson on Jan. 1, 2027. Welts, 73, is a 2018 @Hoophall inductee who previously worked for the Warriors, Suns, Sonics and league office dating the 1970s.

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From the reports quoted here and Keel Stats data; every number is checked against them before publishing.

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