When Jason Giambi and the Yanks parted company last winter, they did so at the end of a tumultuous eight-year relationship. Yet, Giambi hit a respectable .247/.373/.502 with 32 home runs last year, and there was no reason to think he wouldn’t be at least a decent contributor in Oakland. For Giambi, though, 2009 has been an unmitigated disaster. Before injuring himself this week and landing on the DL, Giambi was hitting just .193/.332/.364 with 11 HR and 72 strike outs. His BABIP — a meager .218 — suggests a fair share of bad luck, but the A’s seem to have soured on Giambi. As Mychael Urban wrote on his blog yesterday, the end might be nigh for Jason Giambi, and the A’s may just buy him out when the season is over. It is shaping up to be a rather ignominious end for the once-great and controversial slugger.