Jason Giambi announces retirement - MLB Daily Dish
Jason Giambi retires after 20-year career - Sports Illustrated
Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive
Rockies' Jason Giambi finds tranquil path on baseball's rocky road – The Denver Post
Jason Giambi retires: Farewell to the Giambino
Former MLB Player Jason Giambi Takes A Swing At Virtual Reality
Manny Ramirez retires rather than face drug ban - The San Diego Union-Tribune
Jason Giambi, former Rockies 1B, announces retirement – The Denver Post
Jason Giambi retiring after 20-year career with A's, Yankees, Rockies and Indians – New York Daily News
Hideki Matsui to announce retirement - Pinstripe Alley