The Giants acquired right-handed reliever LaTroy Hawkins from the Chicago Cubs for right-handers Jerome Williams and David Aardsma, giving the injured San Francisco bullpen a veteran setup man. Hawkins, who was 15-3 with a 2.00 ERA as the primary setup man on Minnesota's 2002 and 2003 AL Central championship teams, will serve as the seventh- and eighth-inning setup man for new closer Tyler Walker. "LaTroy's acquisition certainly strengthens and deepens our bullpen, which obviously needs bolstering," Giants general manager Brian Sabean said Saturday.