U.S. goalie Jack Campbell made 14 saves before being replaced by Andy Iles with nine minutes left in a 4-0 victory over Germany in preliminary-round play Thursday night in the World Junior Hockey Championships. "Everything's all right," Campbell said. "It was to give Andy a chance. He's been working hard and he deserves to play. To share [the shutout] with such a great teammate, I couldn't ask for anything more." The U.S. (3-0) remained undefeated with one game remaining in the preliminary round. The Americans will face Switzerland (2-1) on Friday night in a game that could decide the winner of Group A and an automatic bid in the semifinals.