Watch Mavericks’ Cooper Flagg posterize Nets’ Noah Clowney with absolutely mean dunk

Cooper Flagg showed no mercy as he pulled off a marvelous poster dunk over Noah Clowney during the Dallas Mavericks’ clash with the Brooklyn Nets on Sunday night. Flagg is going through the sophomore season of his NBA career with the Mavericks. He shines as one of the best young players in the league, looking to lead Dallas back to…