The Mavericks exercised the third-year team option on Flagg's contract for the 2027-28 season, Brett Siegel of ClutchPoints.com reports.
Flagg is coming off an impressive rookie campaign with Dallas, averaging 21.0 points, 6.7 rebounds, 4.5 assists, 1.2 steals and 0.9 blocks across 33.5 minutes per game in 70 regular-season appearances. The second-year forward should operate as one of Dallas' top offensive options alongside Kyrie Irving in 2026-27.
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Mavericks' Cooper Flagg: Double-doubles with three stocks
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Flagg notched 26 points (8-20 FG, 2-6 3Pt, 8-9 FT), 12 rebounds, four assists, two steals, one block and two turnovers over 30 minutes in Friday's 135-111 preseason loss to the Hawks.
Flagg closed out the preseason strong, recording his first double-double to go with a full stat line. Last season's Rookie of the Year has looked great through the exhibition games, averaging 19.7 points, 7.3 rebounds, 4.7 assists, 1.3 triples, 1.7 steals, 1.0 blocks and 2.0 turnovers in just 24.7 minutes per game, so he appears primed to take another leap in Year 2.
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Mavericks' Cooper Flagg: Available Friday
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Flagg (rest) is available for Friday's preseason game against the Hawks.
Flagg didn't play in Wednesday's meeting with the Pelicans but will be on the floor to close out the preseason. The 19-year-old appeared in two preseason games, averaging 16.5 points, 5.0 rebounds, 5.0 assists, 1.5 steals and 1.0 blocks over 22.1 minutes per contest.
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Mavericks' Cooper Flagg: Sitting out Wednesday
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Flagg (rest) won't play Wednesday against the Pelicans, Mike Curtis of The Dallas Morning News reports.
Flagg is getting Wednesday night off for rest purposes. He'll look to return Friday against the Hawks in what could be a dress rehearsal for the Mavericks.
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Mavericks' Cooper Flagg: Excels in exhibition
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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
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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
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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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Mavericks' Cooper Flagg: Named to All-Rookie Team
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Flagg (ankle) was named to the NBA All-Rookie First Team for the 2025-26 season Wednesday, Shams Charania of ESPN reports
Flagg was a unanimous selection and is the first Maverick since Luka Doncic to earn a spot on the team. The 19-year-old is coming off a magnificent inaugural campaign, finishing with averages of 21.0 points, 6.7 rebounds, 4.5 assists, 0.9 blocks and 1.2 steals across 33.5 minutes in 70 games, good enough to earn the Rookie of the Year award. With Dallas recently parting ways with head coach Jason Kidd, it's unknown how his departure will impact Flagg, specifically, what position he will play from game-to-game. Still, he is anticipated to remain in the All-Star conversation for years to come while potentially flirting with an MVP award somewhere down the line. Flagg's only noteworthy flaws were his 2.3 turnovers per contest as well as his subpar shooting from behind the arc, with the former Duke Blue Devil sinking only 29.5 percent of his three-point shots. He also suffered an ankle injury at the end of the season, although he's expected to be ready to go well before the start of the new year.
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Mavericks' Cooper Flagg: Brings home ROY honors
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Flagg (ankle) was named the 2025-26 Kia NBA Rookie of the Year on Monday, Grant Afseth of DallasHoopsJournal.com reports.
Flagg was more than deserving of this honor, as he averaged 21.0 points, 6.7 rebounds, 4.5 assists and 1.2 steals in 33.5 minutes per game over 70 appearances. He presumably solidified the award down the stretch of the regular season, when he put up 51 points April 3 against Orlando, which was followed up with a 45-point showing two days later against the Lakers. Flagg becomes the third Maverick in franchise history to win the award, joining Jason Kidd (1994-95) and Luka Doncic (2018-19).
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Mavericks' Cooper Flagg: Won't return Sunday
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Flagg (ankle) will not return to Sunday's game against the Bulls.
Flagg will not return after exiting the game early in the second quarter. He concludes his rookie-season finale with 10 points (4-8 FG, 0-1 3Pt, 2-2 FT), four rebounds, one assist and a steal in nine minutes. Tyler Smith and John Poulakidas are candidates for extra minutes with Flagg out.
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Mavericks' Cooper Flagg: Heads to locker room Sunday
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Flagg exited for the locker room during Sunday's game against the Bulls due to an apparent left ankle injury, K.C. Johnson of Chicago Sports Network reports.
Flagg appeared to turn his left ankle before exiting for the locker room early in the second quarter. If he is unable to return, Tyler Smith and John Poulakidas could see extra minutes.
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Mavericks' Cooper Flagg: Drops 33 points in defeat
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Flagg finished Friday's 139-120 loss to the Spurs with 33 points (13-25 FG, 3-7 3Pt, 4-4 FT), six rebounds and five assists in 32 minutes.
After scoring 11 points on 4-of-18 shooting from the field in Wednesday's loss to the Suns, Flagg bounced back on the offensive end Friday. The star rookie led the Mavericks in scoring while posting at least 25 points for the fourth time over his last five games, though it wasn't enough to beat Victor Wembanyama (40 points) and the Spurs. Flagg continues to provide value across the stat sheet and has now tallied at least five rebounds and five assists in 34 of his 69 regular-season appearances.
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Mavericks' Cooper Flagg: Probable for Friday
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Flagg is probable for Friday's game against the Spurs due to a left wrist sprain.
Flagg was also added to the injury report as probable ahead of Wednesday's game against Phoenix before ultimately getting the green light to play, so this appears to be a precautionary listing. The Mavericks should have confirmation on his status as tipoff approaches.
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Mavericks' Cooper Flagg: Double-double in Phoenix
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Flagg racked up 11 points (4-18 FG, 0-4 3Pt, 3-3 FT), 11 rebounds, six assists, one block and one steal in 32 minutes during Wednesday's 112-107 loss to the Suns.
Despite the rough shooting night, Flagg was able to record his 13th double-double of the season, and his fifth in the last 16 games. Over that stretch, the star teenager is averaging 23.8 points, 7.1 boards, 5.6 assists, 1.3 steals, 1.1 blocks and 0.9 threes as he attempts to fend off Kon Knueppel for the Rookie of the Year Award.
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Mavericks' Cooper Flagg: Probable to play Wednesday
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Flagg is probable for Wednesday's game against the Suns due to a left wrist sprain.
Flagg will probably be a game-time call for this contest, but the probable tag suggests the star rookie should suit up and handle his regular workload. Flagg has been outstanding for Dallas recently, averaging 26.9 points, 6.8 rebounds, 4.9 assists, 1.8 steals and 1.3 blocks per game over his last 10 contests.
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Mavericks' Cooper Flagg: Paces team in defeat
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Flagg racked up 25 points (9-25 FG, 1-3 3Pt, 6-6 FT), nine rebounds, two assists and one block over 34 minutes during Tuesday's 116-103 loss to the Clippers.
Flagg came one rebound shy of a double-double in the loss. Flagg and the rest of the squad heated up after a slow start and got back into the game with a 29-point third quarter. Ultimately, the team failed to catch up. Flagg fell back to earth after averaging a massive 48 points over the past two games.
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Mavericks' Cooper Flagg: Shooting woes continue
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Flagg ended with 19 points (6-19 FG, 0-3 3Pt, 7-8 FT), 10 rebounds, three assists, one block and three steals across 32 minutes during Tuesday's 123-99 loss to Milwaukee.
Flagg delivered a better performance than in his previous game, when he posted 12 points on 5-for-19 shooting in a loss to the Timberwolves on Monday. However, the star rookie has been struggling with his shot considerably in recent weeks, perhaps showing signs of fatigue from the long grind of his first season in the NBA. Flagg has gone three straight games without draining a three-pointer, but the long-range woes date back to March 6 when he returned from a foot sprain. In his last 15 games, Flagg is averaging 19.9 points per game but is shooting just 18.2 percent from beyond the arc while attempting multiple threes in all but two of those contests.
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Mavericks' Cooper Flagg: Scores 12 points on 19 shots
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Flagg ended Monday's 124-94 loss to Minnesota with 12 points (5-19 FG, 0-3 3Pt, 2-4 FT), four rebounds, one assist and two blocks across 31 minutes.
Flagg was coming off a 24-point performance in the win over the Trail Blazers on Friday, but he took a huge step back on offense with a subpar shooting effort. The rookie out of Duke failed to reach the 15-point mark for the first time since March 12, and that goes to show just how consistent he's been on offense for a struggling Dallas team. He remains one of the odds-on favorites for the Rookie of the Year award, although he's in a tight race with Kon Knueppel for those honors.
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Mavericks' Cooper Flagg: Paces team with 32 points
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Flagg totaled 32 points (12-19 FG, 2-4 3Pt, 6-6 FT), four rebounds, nine assists and two steals in 42 minutes during Monday's 137-131 overtime loss to Golden State.
Flagg had a superb night and fell one assist shy of a double-double during the heartbreaking loss. The rookie will miss out on his first shot at the playoffs following a horrific 2-8 skid that put the Play-In out of reach. Flagg will need a superb stretch of games as the season ends if he hopes to take home any hardware, as Kon Knueppel may earn more votes for Rookie of the Year with the Hornets making an improbable run to the postseason.
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Mavericks' Cooper Flagg: Teases triple-double Saturday
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Flagg racked up 18 points (6-16 FG, 0-2 3Pt, 6-7 FT), 10 rebounds, eight assists and four blocks across 41 minutes during Saturday's 138-131 overtime loss to the Clippers.
Flagg scored 15 of his 18 points in the first half, though he went 1-for-8 from the field over the second half and overtime. He still finished as the Mavericks' third-leading scorer and finished second on the team in both rebounds and assists, falling two dimes shy from logging the first triple-double of his young NBA career. Flagg has averaged 18.6 points, 7.2 rebounds, 6.6 assists, 1.7 blocks and 0.8 steals over 31.7 minutes per game over his last 10 outings.
