Cooper Flagg’s Family: All About the Duke Basketball Star's Parents and Siblings

Basketball is a Flagg family pastime.

Duke University basketball star Cooper Flagg's parents, Kelly Bowman Flagg and Ralph Flagg, are both former college basketball players and went on to raise three sons who love the sport.

Kelly and Ralph have been married since the early 2000s and welcomed their first son, Hunter, in 2004. (His twin, Ryder, died two days after being born.) Two years later, Cooper and his twin brother, Ace, arrived. The couple raised their family in Newport, Maine, and the boys played basketball in the driveway any chance they could.

"We couldn't play a game in our driveway without someone bleeding," Ace told New Center Maine in April 2025. "The game would end when someone ran in yelling for mom, but it was always fun."

Nowadays, Ace, a three-time high school state champion, has committed to the University of Maine, and Cooper, who is projected to be the No. 1 overall pick in the 2025 NBA Draft, has had an impressive freshman season at Duke University.

The Blue Devils are currently vying for an NCAA title and will face the Houston Cougars on April 5 in the Final Four.

"[Cooper is] the best kid. That's all I can say, is he's just a good person and a good boy. I am very, very proud of him," Kelly told PEOPLE in March 2025.

Here's everything to know about Cooper Flagg's family, including his parents, Kelly and Ralph, and his two brothers, Hunter and Ace.

Kelly and Ralph played college basketball 

Cooper is the product of two college basketball players.

Kelly played for the University of Maine in the late '90s. She and her 1998–99 ...