Atlanta Hawks forward Jalen Johnson has agreed to a five-year, $150 million rookie contract extension with the franchise, Klutch Sports CEO Rich Paul and representative Lucas Newton told ESPN on Monday.

The 20th pick in the 2021 NBA draft out of Duke, Johnson exploded into a productive NBA player in his third season, averaging 16 points, 8.7 rebounds, 3.6 assists, 1.2 steals and 1.3 3-pointers for the Hawks.

He's one of just six players in NBA history to average at least 16 points, 8 rebounds, 3 assists and 1 3-pointer per game in a season before turning 23.

Johnson improved significantly from his first two seasons, when he averaged 5.5 and 14.9 minutes per game, respectively. His jump from 5.6 points in 2022-23 to 16 points last season was the second-largest increase among players to play at least 50 games, trailing only Nets guard Cam Thomas.

The 6-foot-9, 220-pound forward is particularly devastating in transition; his 66% shooting in transition ranked eighth best among players with 120 or more attempts, per Second Spectrum.

ESPN's Tim Bontemps contributed to this report.