Theo Nathaniel Epstein (born December 29, 1973) is an American baseball executive who is currently the President of Baseball Operations for the Chicago Cubs of Major League Baseball (MLB).
Epstein became the youngest general manager (GM) in the history of MLB, when the Boston Red Sox hired him at the age of 28 on November 25, 2002.
In 2004, the Red Sox won their first World Series championship in 86 years and won another championship in 2007.
On October 21, 2011, he resigned from his job in Boston to become President of Baseball Operations for the Chicago Cubs; in 2016, the Cubs won their first World Series championship in 108 years.