Conversation so far:
Are there any other interesting aspects about the Joe Croning article?
at the end of the 1947 season, Joe Cronin succeeded Eddie Collins as general manager of the Red Sox and held the post for 11 years, through mid-January 1959.
was Joe Croninf GM of any other teams besides the red sox?
In January 1959, Joe Cronin was elected president of the American League
When did Joe Cronin become the GM of the red sox?
At the end of the 1947 season

Question: Who did he become the general manager of?
Self-contained rewrite: Who did Joe Cronin become the general manager of?