Ostrava, Czech Republic (SportsNetwork.com) - The United States clinched a World Hockey Championship quarterfinal berth with a 3-1 victory over Slovenia.

Brock Nelson had two goals and one assist for the Americans, who improved to 5-1 and moved atop Group B with 15 points. Jack Eichel also lit the lamp.

The United States can clinch the No. 1 seed in Group B with a victory Tuesday against Slovakia.

Ales Music scored the lone goal for Slovenia, which saw its hopes of escaping relegation come to an end.

The host Czech Republic also earned a quarterfinal spot on Sunday, beating Germany 4-2. Captain Jakub Voracek scored the winning goal for the Czechs, who joined Sweden in second place of Group A with 13 points, two behind leading Canada.

In Group A action later in the day, Canada remained perfect in the tournament after whipping Switzerland by a 7-2 count. Sean Couturier posted a goal and two assists with Aaron Ekblad, Claude Giroux and Cody Eakin adding a score and helper each.

Russia continued its roll in Group B play with a 3-2 overtime decision against Slovakia, as Artemi Panarin produced the game-winning tally at 2:06 of the extra session. Marian Gaborik had sent the game beyond regulation on his marker with 9:05 played in the third period.