Alabama's hopes of returning to a third consecutive BCS National Championship were essentially destroyed Saturday at Auburn, but they weren't killed.The Crimson Tide, which will either be fourth or fifth in tonight's updated BCS rankings, needs two favorites -- one of whom is a major favorite -- to lose in their respective conference championships to potentially sneak into the national title game.If this sort of improbable scenario unfolded, Alabama could potentially face Auburn in an Iron Bowl rematch -- or Missouri if it beats Auburn in the SEC Championship -- for the BCS National Championship.