Theo Nathaniel Epstein is the President of Baseball Operations for the Chicago Cubs. On November 25, 2002, he became the youngest GM in the history of Major League Baseball when the Boston Red Sox hired him at the age of 28. In 2004, he was general manager of the club that won the first World Series championship by the Red Sox in 86 years and was in the position when the team won another championship in the 2007 season. 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. 

December 29th, 1973 in New York City (Age 51)