Theo Nathan Epstein (born December 29, 1973) is the Executive Vice President/General Manager of the Boston Red Sox. On November 25, 2002, the Red Sox made him the youngest GM in the history of Major League Baseball by hiring 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 a second in the 2007 season. Epstein resigned in October 2005, but was rehired as GM and Executive Vice President on January 24, 2006.
He attended Brookline High School (a 1991 graduate), and never played baseball for the Brookline High School Warriors, but dreamed of working for the Red Sox. Epstein has a fraternal twin brother, Paul Epstein; together they founded a charity, "Foundation to be Named Later." Epstein's grandfather, Philip G. Epstein, and great-uncle, Julius J. Epstein, won Academy Awards for the screenplay of Casablanca, while his father, the novelist Leslie Epstein, is the head of the Creative Writing Program at Boston University. Epstein's sister, Anya Epstein, was a writer for the television series Homicide: Life on the Streets and Tell Me You Love Me. On January 1, 2007, Epstein married Marie Whitney, a volunteer at Horizons for Homeless Children. An early report on the marriage from Boston Globe sportswriter Gordon Edes reported the site of the wedding was Nathan's Famous hot dog stand at Coney Island. Edes later published a correction, noting that he had fallen for a prank by Theo's father, Leslie. The site and actual date of the wedding was never released, but the Boston Herald later published a story claiming the wedding took place on Red Sox owner John Henry's yacht in Saint Thomas. On December 12, 2007, Epstein's wife gave birth to the couple's first child, Jack, in Boston, Massachusetts.
Epstein attended Yale University where he lived at Jonathan Edwards College and served as sports editor of the Yale Daily News, and graduated in 1995 with a degree in American Studies. Eventually he took a job in the PR department of the San Diego Padres; soon Epstein would become the team's Director of Baseball Operations. While working for the Padres, he studied full-time at the University of San Diego School of Law, where he earned a Juris Doctor degree but has never been a member of the State Bar of California.