Houston Astros president and CEO George Postolos resigned on Monday, the team announced.
Postolos served in that capacity since November of 2011 and played a significant role in Jim Crane's purchase of the team from former owner Drayton McLane.
"I am very proud of what Jim accomplished with my help -- acquiring a major league franchise with a strong and diverse ownership group, developing and implementing a good plan for the team's future, and assembling a first rate management team," Postolos said in a statement. "I look forward to helping other investors pursue their objectives in sports knowing that Jim and the Astros organization are off to a great start and well positioned for future success."
Postolos plans to return to his consulting practice.
CBS Sports reported that Postolos was not well-liked within the organization. However, the Houston Chronicle reported before the season that Postolos, Crane and general manager Jeff Luhnow have been on the same page regarding the rebuilding of the young team.
"We appreciate George's hard work in the acquisition of the Astros and his commitment to the organization," Crane said in a statement. "I'd also like to personally thank him for the assistance that he has provided to me over the last several years and wish him the best of luck in the future."
The Astros are off to a 10-28 start to the season and went 55-107 in 2012.