Blue Devil Country

Duke Basketball Star's Twin Helps End UNC Signee's Prep Career

Longtime Duke basketball supporter Ace Flagg squared off against future Tar Heel guard Isaiah Denis.
Matt Giles|
Duke basketball forward Cooper Flagg
Duke basketball forward Cooper Flagg | Geoff Burke-Imagn Images

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Duke Blue Devils

Greensboro Day School (N.C.) senior forward Ace Flagg, on tap to play for his home-state Maine Black Bears, is a 6-foot-7, 180-pound three-star and twin brother of Duke basketball freshman phenom Cooper Flagg. Davidson Day School (N.C.) senior guard Isaiah Denis is a four-star signee for rival UNC.

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On Tuesday night, Flagg and his Greensboro Day Bengals (30-5) encountered Denis and his Patriots (22-13) in the North Carolina private school semifinals. The Bengals prevailed, 45-39, advancing to face Concord Academy for the title at 4 p.m. ET Saturday.

As things stand, Ace Flagg ranks No. 291 overall, No. 61 among power forwards, and No. 20 in the state on the 247Sports 2025 Composite. He racked up offers from Maine, George Washington, and West Virginia before committing to the Black Bears on Oct. 29 and putting it in ink a few weeks later.

And he's been behind the Duke bench in Cameron Indoor Stadium a few times this season, most notably for the Blue Devils' 87-70 win over the Tar Heels on Feb. 1.

Meanwhile, Duke basketball enjoys the top 2025 haul with four five-stars in tow: Harvard-Westlake School (Calif.) forward Nik Khamenia, Bellaire High School (Texas) forward Shelton Henderson, and the Columbus High School (Fla.) twins in guard Cayden Boozer and forward Cameron Boozer.

UNC's three-deep collection currently checks in at No. 9 overall. Denis appears at No. 62 overall among his 2025 peers.

ALSO READ: Five-Star Lefty Lists Blue Devils Among In-Person Visitors

Stay tuned to Duke Blue Devils On SI for more Duke basketball news.

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Matt Giles
MATT GILES

Matt Giles is the editor and publisher of Duke Blue Devils on SI, North Carolina Tar Heels on SI, and NC State Wolfpack on SI, making him a key source for comprehensive coverage of these storied college basketball programs. Since joining SI in 2022, Matt has been dedicated to providing in-depth analysis, breaking news, and exclusive content on all three teams. He covers everything from game previews and recaps to player profiles and recruiting updates. Matt's expert knowledge of these teams has made his work a go-to resource for fans and followers of Duke, NC State, and UNC. As publisher, he shapes the editorial direction, ensuring that the most relevant and timely information reaches his audience.

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