Player Bio
| HT/WT: 6-9, 205 lbs |
| Birthplace: Newport, ME |
| Age: 19 |
| School: Duke |
| Experience: 1 |
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4:48Is Joaquim Boumtje Boumtje already Duke's best player? | EOCBB
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0:38NBA Preseason Highlights: Mavericks at Rockets (10/11)
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1:59Rockets Take Down Mavericks in NBA Preseason
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1:13Pressure on Duke's Jon Scheyer to Win National Title
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0:56NBA Summer League Winners & Losers: Fans Hoping to See Top Talent
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1:20NBA Summer League Standouts: Boozer Begins Career With Grizzlies
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9:45Biggest Questions for the NBA's Western Conference
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1:19Mavericks: Trade Kyrie Now or Let Him Reestablish Value?
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1:46Morez Johnson Jr. Follows HC Dusty May to Dallas
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1:59NBA Draft: A Coach's Dream Player
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1:49Dallas Mavericks Plan in the Draft
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1:48How Dusty May Fits With the Dallas Mavericks
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1:13The Case for Cameron Boozer in the 2026 NBA Draft
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0:36
Should the Mavericks Explore a Kyrie Irving Trade?
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1:04Clippers Select Keaton Wagler at No. 5 in 2026 Mock Draft
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0:57Mavericks Select Brayden Burries at No. 9 Overall
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8:15Sam Quinn's NBA Coaching Matchmaker
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1:28Why the Mavericks Job is the NBA's Most Desired Vacancy
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0:59What Will Wizards Do With No. 1 Overall Pick?
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16:23NBA Draft Prospect Comparison After Dybantsa
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Top Cooper Flagg News
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Mavericks' Cooper Flagg: Fills stat sheet in victory
Flagg recorded 14 points (3-10 FG, 1-4 3Pt, 7-8 FT), four rebounds, seven assists, two steals and a block across 25 minutes in Sunday's 132-115 preseason win over the Rockets.
Flagg struggled with his shot but delivered an impressive playmaking performance, leading Dallas with seven assists and committing just two turnovers. Despite his shooting woes, Flagg still found a way to contribute offensively, getting to the free-throw line eight times. Even with Kyrie Irving in the backcourt, Flagg should be a key playmaking and scoring weapon for the Mavericks ahead of his second year in the league following an impressive rookie season in which he averaged 21.0 points, 6.7 rebounds, 4.5 assists, 0.9 blocks and 1.2 steals across 33.5 minutes in 70 regular-season games.
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Mavericks' Cooper Flagg: Excels in exhibition
Flagg recorded 19 points (7-14 FG, 1-5 3Pt, 4-4 FT), six rebounds, three assists, one steal and one block in 19 minutes during Friday's preseason loss to Houston.
Flagg was productive in limited action, shooting 50 percent from the field while contributing across multiple categories. The second-year forward also converted all four of his free-throw attempts, offering an encouraging glimpse of his offensive development ahead of the 2026-27 regular season. Flagg figures to remain a central piece of Dallas' offense as the Mavericks work through their revamped rotation.
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Mavericks' Cooper Flagg: Measures at 6-foot-10
Flagg said at Mavericks Media Day that he has grown from his listed height of 6-foot-9 last season to an official barefoot measurement of 6-foot-10, Marc Stein of The Stein Line reports.
The 19-year-old's continued physical development gives him even more positional size heading into his second NBA season after an impressive rookie campaign. The sky is the limit as Flagg will now benefit from playing alongside a healthy Kyrie Irving in 2026-27.
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Mavericks' Cooper Flagg: Seeking better efficiency in Year 2
Flagg (ankle) could be working alongside a new member of the starting lineup after Dallas selected Morez Johnson with the No. 9 overall pick in the 2026 NBA Draft.
P.J. Washington and either Dereck Lively (foot) or Daniel Gafford remain the early favorites to comprise the Mavericks' starting frontcourt in 2026-27, but Johnson certainly poses a significant risk to that projection. Dallas is set to finally have Kyrie Irving back in the fold next year following his knee surgery, and the star guard's presence might have more of an impact on Flagg's performance than Johnson's. That in mind, Flagg is in jeopardy of seeing a downtick in usage, but he shot just 29.5 percent from deep during his rookie campaign and could see more open looks from downtown with Irving in the lineup.
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