This is accurate — Cooper Flagg, a 19-year-old Dallas Mavericks rookie, did score 51 points on Friday to become the youngest player ever to hit 50 in an NBA game. He scored at 19 years and 103 days old, breaking the previous record set by Brandon Jennings at 20 years and 52 days old. The post is a straightforward game highlight with verified facts and multiple credible sources confirming the achievement.