John Hart, one of two men behind the rebuild of the Atlanta Braves, has resigned his position with the team, effective immediately.

Hart, who briefly held the title of senior advisor, is pursuing other opportunities outside the organization, according to a statement from the team.

Hart's resignation comes after the introduction of Alex Anthopoulos on Monday as the new executive vice president and general manager. Hart, who had been the president of baseball operations, was to have transitioned into a new role as a special adviser.

Hart and former Braves GM John Coppolella oversaw the rebuilding of the team's farm system for the past several years.

Coppolella and international scouting supervisor Gordon Blakeley were forced to resign immediately after the 2017 season for a series of alleged rules violations regarding the international player market.

Here is Hart's full statement:

“This was a difficult decision, but it’s one that I made with the best interests of the Atlanta Braves in mind. With the hiring of Alex Anthopoulos as general manager, this organization is in great hands. I believe that the talent of the Major League players, combined with the young talent soon to arrive, makes the Braves poised for a great run of success.

"This is a good time to step aside and let Alex and his group put their stamp on this great franchise. I still have a tremendous passion for this great game, and I plan to stay active and contribute to the game.

"I want to thank Braves fans – the best fans in baseball – for your patience during this rebuilding time. You will soon see the winning team that you deserve.

"I also want to thank my beautiful and supportive family. I am very excited to see how the next chapter of our life unfolds.

"Finally, I want to thank my longtime friend, John Schuerholz, for convincing me to come to Atlanta to oversee the rebuild. And especially to our leader, Terry McGuirk, who has shown such passion for returning to a winning place."