Jason Giambi signing with the Yankees was the biggest gut punch in terms of someone leaving the A's. Who are you still not over leaving? : r/OaklandAthletics

What are your thoughts on Jason Giambi as a former Yankee? : r/NYYankees

Jason Giambi Yankee Yapping

Do-over: The A's sign Jason Giambi to an extension in 2001 - The Athletic

Boston Red Sox Nation - Lackey, Martinez, Beltre, Ortiz, Beckett, Ellsbury, Lester, Pedroia, Youkilis, Matsuzaka, Papelbon, Drew, Bard, Buchholz, Varitek, Hermida, Lowell, Wakefield

9-24 Jason Giambi Pinch Hit Walk Off Home Run Pt. II - Tom Hamilton

Ryan Noda, Esteury Ruiz power A's walk-off win vs. D-backs

Hideki Matsui Yankee Yapping

What are your thoughts on Jason Giambi as a former Yankee? : r/NYYankees

Jorge Posada Yankee Yapping

Jason Giambi Returns To Roots With Oakland A's

Jason Giambi, Oakland Athletics on verge of one-year deal - ESPN

Joba Chamberlain