Theo Nathaniel Epstein (born December 29, 1973) is an American baseball executive and attorney currently serving as the President of Baseball Operations for the Chicago Cubs of Major League Baseball (MLB).
On November 25, 2002, Epstein became the youngest general manager (GM) in the history of MLB, when the Boston Red Sox hired him at the age of 28. In 2004, the Red Sox won their first World Series championship in 86 years and won another championship in 2007. Epstein resigned in October 2005, but was rehired as GM and executive vice president on January 24, 2006. On October 21, 2011, he resigned from his job in Boston to become President of Baseball Operations for the Chicago Cubs, who – in 2016 – won their first World Series championship in 108 years.