Jason Giambi retiring after 20 years in Major League Baseball
Rockies' Jason Giambi adds dad, role model to his résumé – The Denver Post
Former Rockies slugger Jason Giambi retires - Purple Row
Jason Giambi announces retirement from MLB, calls career 'incredible journey' - ESPN
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Jason Giambi announces retirement, thanks family and baseball friends – New York Daily News
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Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive
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Jason The Giambino Giambi: 2000 AL MVP, 440 career HR, 5x All-Star, 2x Silver Slugger, elite .399 OBP over 20 yrs - Italian Americans in Baseball
After 20 seasons, Giambi calls it a career
Jason Giambi says he's retiring after 20 seasons in majors