The New Orleans Pelicans have hired Phoenix Suns assistant Willie Green as their new head coach.

Green, a former NBA player who turns 40 on July 28, is a first-time head coach after serving as an NBA assistant coach the past five years — first with Golden State and then with Phoenix, which lost to Milwaukee in the NBA Finals on Tuesday.

He arrives in New Orleans at a time when pressure is rising to give young star Zion Williamson faith that he can find long-term satisfaction with the club that drafted him first overall two years ago.

Willie has established himself as one of the most respected assistant coaches in the NBA. In large part, this is due to a tireless work ethic and authenticity of character,” David Griffin, executive vice president of basketball operations, said Thursday. “He brings a vast amount of basketball knowledge and experience to our team as both a coach and former player, along with exceptional leadership qualities and an innate ability to connect with players, staff and fans alike.”

Green was a member of two NBA title-winning staffs with the Warriors in 2017 and 2018. He moved to Phoenix two seasons ago to join the staff headed by Monte Williams, who also was the head coach in New Orleans when Green played there in the 2010-11 season on a team that guard Chris Paul led to the playoffs.

With the Suns, Green has been widely credited as the architect of the team’s defensive system. Phoenix had the NBA’s sixth-best defensive rating (points allowed per 100 possessions), while high-scoring New Orleans missed the playoffs in part because of its 23rd-rated defense.