pros are fans

Is Cooper Flagg a Boston Celtics fan?

Reportedly, yes. Cooper Flagg is a Boston Celtics fan, according to CBS Sports.

Cooper Flagg Full fan file: every team he roots for, with receipts

Boston Celtics

“we'd pop in 85-86 Celtics the whole championship run”

CBS Sports.

CBS Sports, originalour saved copy

Last checked November 8, 2026: the quote still matched the page word for word.

What other teams does Cooper Flagg root for?

Patriotsin his wordsCowboysreportedGolden State Warriorsreported

Why trust this: every fandom here comes with the exact quote, where it ran, a link to the original and a copy we saved, and we fix mistakes in the open. How we know