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After 20 seasons, Giambi calls it a career
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Jason Giambi – Society for American Baseball Research
Renck: Jason Giambi's chances for Rockies manager are legit – The Denver Post
Giambi breaks out of slump in big way - Taipei Times
Jason Giambi retires: A look back at his Athletics career - Athletics Nation
Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive
Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive
Why Jason Giambi turned down Yankees' job interest
Jason Giambi is Retiring from Baseball
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Jason Giambi retires: A look back at his Athletics career - Athletics Nation