Theo Epstein quits Red Sox, joins Cubs

The worst-kept secret in baseball is finally, officially out in the open. The Boston Red Sox and Chicago Cubs issued a joint statement Friday night announcing that Theo Epstein has resigned from his post as Boston's general manager to become the Cubs' president of baseball operations.

The move is "effective immediately," according to the statement, although the teams won't hold news conferences until Tuesday, the next off day in the World Series, when the Cubs will presumably introduce Epstein in Chicago, while Red Sox assistant GM Ben Cherington is expected to be named Epstein's successor in Boston.

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