2003 Hallmark Ornament Jason Giambi # 8 In At The Ballpark Series Hallmark Keepsake Ornament - Jason Giambi #8 in At the Ballpark Series 2003 (QX2449) Jason stands approx. 5" in height. Jason Giambi is the 8th ornament in the At the Ballpark Series of ornaments! Jason has played with both the Oakland A's and the New York Yankees.