PRAGUE -- Brock Nelson scored twice and added an assist Sunday as the United States clinched a spot in the quarterfinals of the ice hockey world championship with a 3-1 victory over Slovenia.
The Czech Republic and defending champion Russia also advanced to the knockout stage, while already-qualified Canada maintained a perfect record by trashing Switzerland 7-2 to clinch first place in its group.
The Czechs beat Germany 4-2 while Russia needed overtime to overcome Slovakia 3-2.
Nelson has six goals at the tournament and tops the scoring chart together with Sweden's Filip Forsberg.
The United States is atop Group B with 15 points from six games, one ahead of Russia while Finland is in third with 12. Slovenia has zero and will be demoted to the second-tier tournament next year.
"All through the game we did a good job of getting to the net," said Los Angeles Kings forward Trevor Lewis, who had three assists. "That's where all the goals came from. Brock's a big strong guy and he was really good around the net tonight."
Nelson netted off Mike Reilly's pass from behind the net 4:17 into the game and added his second on a power play with 3:28 remaining in the first period. Jack Eichel had the third American goal in the final period.
Ales Music netted for Slovenia on a breakaway in the second. U.S. goaltender Connor Hellebuyck stopped 21 shots.
Morris Trachsler and Damien Brunner scored for Switzerland.
Canada tops Group A with 18 points, five more than Sweden and the Czech Republic with one game to go in the group stage. Switzerland has nine in fourth.
In Group B in Ostrava, Artemi Panarin gave Russia the win when he wristed a shot past goalie Julius Hudacek 2:06 into overtime. Marina Gaborik tied the game for Slovakia 7:05 into the third period.
"It was hard but it seems to me that basically, we played well today," Russia captain Ilya Kovalchuk said. "We created plenty of chances, had a lot of the puck."
"It was our duty to advance," Voracek said. "We are well aware that we're strong in offense. There's no need to panic when we're 1-0 down. We have to focus on avoiding defensive errors. The goals will come for sure."
The 43-yeard-old Jagr added an insurance goal with 4:02 to go for his fourth at the tournament.