Jason Giambi has personally signed this 7/17/00 Sports Illustrated Magazine-Jason Giambi can be considered one of the premier power hitters of his generation. After winning an American League MVP award with the Oakland As in 2000 Giambi signed a free agent contract to come to the Yankees for the 2002 season. Giambi was as-advertised during his first two seasons in the Bronx having consecutive 41 HR seasons in 2002 and 2003. After 7 seasons in New York Giambi spent part of the 2009 season back in Oakland before being released and then signed by the Colorado Rockies. This Jason Giambi autograph is Guaranteed Authentic by Steiner Sports and include a Steiner Sports Certificate of Authenticity and an accompanying tamper-proof Steiner Hologram. The Steiner Seal Means Its Real. This piece is also MLB Authenticated.