Ken Harrelson resigned as executive vice president of the Chicago White Sox, the team announced Friday.
The resignation was effective immediately, and no successor was named.
Harrelson, a first baseman and outfielder who played for Kansas City, Washington, Boston and Cleveland in a nine-year major league career that ended in 1971, will remain with the club as a special consultant.
His duties will be assumed by General Manager Tom Haller, with assistance from scouting director Terry Logan, Manager Jim Fregosi, and Jack Gould, vice president of baseball administration.
In a prepared statement, Harrleson said: "There were some mistakes that I made that hurt the organization with perception and credibility to the White Sox fans. After all is said and done, they, the fans, are the most important factor."
Harrelson, who previously served as a television commentator for the White Sox, signed a one-year contract last September to serve as vice president in charge of baseball operations, replacing Roland Hemond.