By NBA Insider | January 28, 2026 Category: Mavericks News, Philanthropy
In the NBA, “rookie duties” usually involve carrying veteran’s bags or bringing donuts to practice. For Dallas Mavericks sensation Cooper Flagg, his rookie duty has been something entirely different: honoring a promise he made to himself and his family long before he ever wore an NBA jersey.
While the sports world is obsessed with his rookie of the year campaign and his decision to stay loyal to Dallas, the most meaningful headlines Cooper Flagg made this year didn’t happen on the court. They happened in the quiet hallways of the Ronald McDonald House, where the 19-year-old superstar is quietly becoming a hero for families in crisis.
The “Why”: A Miracle Born at 35 Weeks
To understand why Cooper Flagg donates thousands of dollars to this specific charity, you have to go back 20 years. Before he was a 6’9″ NBA forward, Cooper was a 5-pound, 9-ounce preemie fighting for a strong start.
In December 2006, Cooper and his twin brother, Ace, were born weeks early at Maine Medical Center. While they were fortunate enough to go home relatively quickly, their parents, Ralph and Kelly Flagg, already knew the inside of a NICU all too well. Two years prior, their older brother Hunter was born at just 24 weeks, weighing a precarious 1 pound, 10 ounces.
Hunter spent 109 days in the hospital. During that terrifying uncertainty, the Flagg family didn’t sleep in their car or drive 90 minutes back and forth to their home in Newport. They slept at the Ronald McDonald House in Portland, just minutes away from their baby.
“I never left Portland… Being three minutes away instead of an hour and a half was huge,” Kelly Flagg recalled.
That debt of gratitude never left the family. Now that Cooper has the platform, he is paying it back with interest.
The Receipts: From Durham to Maine
The viral reports circulating social media this week are accurate. Cooper Flagg’s philanthropic streak began well before he signed his NBA contract.
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December 2024 (Durham, NC): During his standout season at Duke, Cooper didn’t just practice; he visited the Ronald McDonald House of Durham. He spent time playing mini-hoops with patients—including a young boy named Eli awaiting heart surgery—and dropped a $10,000 donation to support the facility.
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September 2025 (Maine): Just months after being drafted #1 overall, the Flagg family directed another $10,000 to the Ronald McDonald House Charities of Maine. This donation was fueled by proceeds from his official “Draft Night” watch party and sales of his family-approved “In Flagg We Trust” merchandise.
Update: January 2026
Now settled in Dallas, Cooper hasn’t forgotten his roots. Sources close to the Mavericks confirm that Flagg is currently in talks to partner with the Ronald McDonald House of Dallas, looking to establish a “block-for-bucks” program where every blocked shot he records translates into a donation for family housing.
In a league where superstars are often criticized for being disconnected from reality, Cooper Flagg is a reminder that some players never forget where they came from—or, more accurately, where they started.
