Jason Giambi retiring after 20-year career with A's, Yankees, Rockies and Indians – New York Daily News

Jason Giambi retires, Yankees will honor Andy Pettitte, Jorge Posada and Bernie Williams and more MLB news

Jason Giambi retires from MLB - ABC7 Chicago

Jason Giambi – Society for American Baseball Research

Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive

Jason Giambi Retires: A Look at His Quick Decline

Jason Giambi Reinvents Himself, and Baseball Is Intrigued - The New York Times

Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive

Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive

Jason Giambi retires after controversial career with Yankees, A's - Sports Illustrated