Milwaukee Bucks general manager Larry Harris is firm in his belief that someone will emerge at the team's center position, much as Brian Skinner did last season. But the Bucks suffered a setback Friday when one of their candidates at the position, 6-foot-11 Zendon Hamilton, underwent arthroscopic surgery to remove loose cartilage in his right knee. Hamilton, who suffered the injury Tuesday night in the Bucks' exhibition game at Dallas, is expected to be out for six weeks. That leaves the Bucks' center spot in the hands of 20-year-old Zaza Pachulia, third-year pro Dan Gadzuric and 7-foot-1 Daniel Santiago. Gadzuric started 30 games in his rookie season, and Santiago started 28 games last season. http://www.jsonline.com/sports/buck/oct04/268932.asp