Former Colorado Rockies star Troy Tulowitzki retires, Sports
Jason Giambi Retires: A Look at His Quick Decline
Giambi's walkoff homer gives Rockies 10th straight victory – The Denver Post
Todd Helton's case for Hall of Fame hinges on Coors Field
Jason Giambi - Wikipedia
Jason Giambi and the Steroid Era's best chance for a Hall of Famer
Colorado Rockies news: Jason Giambi was a one-man wrecking crew - Purple Row
Jason Giambi – Society for American Baseball Research
Giambi wastes no time helping Rockies - The San Diego Union-Tribune
Jason Giambi has retired : r/baseball
Jason Giambi, former Rockies 1B, announces retirement – The Denver Post