Jason Giambi is somehow underappreciated in Yankees' history - Pinstripe Alley

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

Jason Giambi New York Yankees Autographed 8 x 10 Hitting Photograph

This Day in Yankees History: Gleyber Torres celebrates birthday - Pinstripe Alley

For the holiday season: The Yankees' Top 10 free agent signings of all-time - Pinstripe Alley

Boston Red Sox Nation: Archives

The Future Is Now

Yankees: Revisiting NYY Signing Jason Giambi at His Peak

The 10 Greatest Yankees (not in the Hall of Fame) - Pinstripe Alley

Teammates have tried Giambi's lucky thong to bust out of slumps - ESPN

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