After 20 seasons, Giambi calls it a career

Oakland Athletics: Brothers That Have Played For the A's

Forgotten Greats: Seven Oakland A's hitters we should remember more often - Athletics Nation

Jason Giambi – Society for American Baseball Research

Ranking MLB's 25 Best Outfielders Since 2000, News, Scores, Highlights, Stats, and Rumors

Jason Giambi cleared for baseball activities after sickness - NBC Sports

Pinstripe Alley Top 100 Yankees: #60 Jason Giambi - Pinstripe Alley

Jason Giambi retires after 20 seasons

In the movie Moneyball, Billy Beane (Brad Pitt) said Jason Giambi was 'the worst first-baseman in all of baseball.' referring to Giambi's fielding. Was it accurate that Giambi was MLB's worst fielding

Jason Giambi says Astros sign-stealing is 'no different' than players using steroids