The United States won the junior ice hockey championships on Saturday after Rocco Grimaldi scored twice and Vince Trocheck added an empty-net goal to clinch a 3-1 win over Sweden in the final. Filip Sandberg put defending champion Sweden ahead on a power play early in the second period, but Grimaldi then scored twice in a three-minute span to swing the game in the Americans' favor. He powered from behind the net to score an equalizer from a narrow angle, and then redirected Jacob Trouba's slap shot from the blue line midway through second period.