BALTIMORE — There’s no shame in beating up on the bottom-feeders. That’s what good teams are supposed to do. That’s what the White Sox are doing. Their 8-3 victory Saturday against the Orioles put them in position for a weekend sweep of the American League’s worst team. A victory Sunday would give the AL Central-leading Sox a 6-3 road trip against the Tigers, Twins and Orioles, all losing teams. It also would give them a 54-35 record at the All-Star break. ‘‘We play our game no matter who is across the line,’’ said outfielder Brian Goodwin, who had four hits, including his fourth home run. ‘‘We don’t play down to our competition; we play up to our competition. Every game, come to play hard.’’