Duke coach Mike Krzyzewski, the winningest coach in Division 1 men’s college basketball history, is calling it a career following the 2021-22 season. He has been the head coach at Duke for 42 years.

The news was first reported by Stadium and confirmed by multiple sources.

“All of us have looked at Coach K as the North Star at the Duke program, and he’s been the most meaningful relationship that all of us have had in basketball and with Duke,” former Blue Devil and current ESPN analyst Jay Bilas said on ESPN.

“And to all of us, he is Duke and so it’s a profound moment I think for all of us.”

The news broke the same day that Danny Ainge announced he was stepping down as President of Basketball Operations for the Boston Celtics, while head coach Brad Stevens would be elevated to Ainge’s old position.

Former Duke point guard and current ESPN NBA analyst Jay Williams Tweeted that Krzyzewski had “changed my life in so many ways.”

Known around the world as “Coach K,” the 74-year-old Krzyzewski is the all-time winningest coach in men’s college basketball with 1,170 all-time victories. He has won five NCAA championships — more than anyone besides John Wooden (10) — and taken Duke to 12 Final Fours, while winning three Olympic gold medals as head coach of the USA Basketball team (2008, ‘12, ‘16).

Current Duke associate head coach and former player Jon Scheyer is expected to succeed Krzyzewski, with one source saying, “It’s done.”

Coach’s K exit will follow that of his longtime rival, former North Carolina coach Roy Williams, 70, who announced April 1 he was retiring after 33 years as a head coach. He was succeeded by his longtime lieutenant Hubert Davis.

Two other ACC coaches are in their 70s: Syracuse’s Jim Boeheim (76) and Florida State’s Leonard Hamilton (72).

“Mike’s been fantastic for the game of basketball,” Williams told reporters Tuesday. “He’s been fantastic for college basketball. He’s been fantastic for the ACC and the greatest rivalry in sports, the Duke-North Carolina rivalry.

“He’s been a great friend. He’s been a guy I’ve respected a great deal. He made everybody bring their A game for years and years and years.”

In 2004, the Los Angeles Lakers reportedly offered Coach K a five-year, $40-million deal to coach the team which then featured Kobe Bryant.

“Your heart has to be in whatever you lead," Krzyzewski said then. “It became apparent that this decision was somewhat easier to make because you have to follow your heart and lead with it an Duke has always taken up my whole heart.”

This past season, Coach K and Duke struggled during the pandemic, finishing 13-11 and 9-9 in the ACC. They did not qualify for the NCAA Tournament and ended their season during the ACC Tournament after a Covid issue.

“We are disappointed we cannot keep fighting together as a group after two outstanding days in Greensboro,” Coach K said then. “This season was a challenge for every team across the country and as we have seen over and over, this global pandemic is very cruel and is not yet over. As many safeguards as we implemented, no one is immune to this terrible virus.”

Last month, Coach K appeared on a Zoom honoring his longtime friend Tom Konchalski, who passed in February after a battle with cancer. Krzyzewski said the legendary New York-based scout deserved to be in the Naismith Hall of Fame. He did not gain entry this year but may in the future.

“No one was more kind, and...when you were with him, you felt you were the most important person in the room,” Coach K said. “I loved Tom Konchalski, I loved him and there will never be a replacement for him.”

Duke this season had 26 former players on NBA rosters, including former overall No. 1 overall picks Kyrie Irving of the Nets and Zion Williamson of the Pelicans. Entering this season, Coach K’s former Blue Devil players have accumulated more than $2 billion in NBA contracts. Lottery selections who played for Coach K at Duke have combined to earn more than $1.6 billion in contracts, an average of nearly $60 million per individual. These figures don’t include the five-year, $195 million max contract extension signed by Jayson Tatum of the Celtics, nor the five-year, $158 million max contract extension inked by Brandon Ingram of the Pelicans.

In recent years, Coach K and his staff went away from exclusively recruiting players who would stay on campus for three or four years to recruiting potential one-and-done players while also dabbling with the NCAA Transfer Portal.

In the last decade, only two programs who relied heavily on one-and-dones won an NCAA championship: Kentucky’s 2012 team featuring Anthony Davis and Michael Kidd-Gilchrist and Duke’s 2015 squad with Jahlil Okafor, Justice Winslow and Tyus Jones.

Duke’s current roster features several players projected as one-and-dones after next season including projected No. 1 pick Paolo Banchero and No. 6 pick A.J. Griffin, per ESPN.

Those players and New Jersey guard Jaylen Blakes — who signed in April — will only be coached by Krzyzewski for one season, no matter what they do after next year.

“He’s remained there and he’s inextricably linked with Duke and always will be,” Bilas said.