The St. Louis Blues can’t seem to buy a win these days. Their winless streak reached seven games with a 4-0 loss at Minnesota last night. Wes Walz scored twice for the Wild, including a goal on a penalty shot in the third period. Sergei Zholtok and Pascal Dupuis also scored for Minnesota. All-Star goalie Dwayne Roloson stopped all 24 Blues shots for his third shutout of the season. Blues goalie Chris Osgood allowed three goals on nine shots before he was replaced by Reinhard Divis midway through the second period. The Blues remain in third place in the Central Division and in ninth place in the Western Conference, one point behind Calgary and Los Angeles. The Blues play in Edmonton on Wednesday.