Jason Giambi is a Baseball-Player, currently playing for Oakland Athletics. Jason Giambi was born in 1971 in . There are currently 4355 Cards of Jason Giambi in our Database including 1 rookie Cards and 3841 variations Cards. The most valuable Card of Jason Giambi is currently 2002 Donruss Classics Significant Signatures #35 Jason Giambi /15 by Donruss Classics from 2002 with a worth of approx. $112.5.