ST. PETERSBURG, Russia (AP) Denmark defenseman Jesper Jensen was taken to the hospital with a concussion Tuesday after being knocked unconscious during a game at the hockey world championship.
Jensen was checked into the boards by Switzerland captain Andres Ambuhl early in the third period of a game in Moscow and hit his head against the glass. He was carried off on a stretcher.
''Jesper has suffered a concussion and will stay in the hospital for at least one night for observation, which is standard procedure,'' Denmark team doctor Per Albaek said in a statement.
Switzerland went on to beat Denmark 3-2 in overtime.
The Danish team said Jensen would play no further part in the tournament.
Earlier, Germany beat Slovakia 5-1 in St. Petersburg and moved into fifth place in the eight-team Group B standings.
German league players Dominik Kahun and Philip Gogulla each had a goal and an assist as Germany won its first game of the tournament and moved ahead of the United States.
Edmonton Oilers center Leon Draisaitl picked up his first point of the tournament with an assist on Germany's third goal.
''He also knows he can play better, but everyone is putting so much pressure on him,'' Germany coach Marco Sturm said of the 20-year-old Draisaitl. ''It's not easy. He's still a kid.''
Germany's next opponent is Canada, which has scored 20 goals in its first three games of the tournament.
''We're going to enjoy tonight our victory today, but tomorrow our focus will be to the next game and it will be a tough one,'' Sturm said of Thursday's game.
Slovakia remains in third place despite the loss, behind Canada and Finland and ahead of France. The top four teams in each group advance to the playoff round.
''No discipline. No motivation,'' Slovakia coach Zdeno Ciger said. ''We were slow all over the ice.''
Also in St. Petersburg, France got three goals from Sacha Treille in a 6-2 victory over Hungary.
In Group A in Moscow, a third-period comeback helped the Switzerland pick up its first win.
The 2013 finalists had already lost to Kazakhstan and Norway and seemed on course for another defeat while trailing 2-0 in the third before goals from Yannick Weber and Nino Niederreiter tied the game.
Eric Blum scored the winner with a minute left in overtime.
Switzerland is fifth in Group A, one place above Denmark. The Czech Republic leads the group ahead of Russia and Sweden.
Also, fourth-place Norway beat Kazakhstan 4-2.