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Henrik Zetterberg (back) out of Sochi

SOCHI, Russia -- Sweden captain Henrik Zetterberg will miss the rest of the Olympic men's hockey tournament because of a back injury.

Zetterberg scored a goal in the Swedes' opening victory over the Czech Republic on Wednesday, but sat out of Thursday's practice because of a herniated disk in his back.

The Detroit Red Wings captain had anti-inflammatory treatment and consulted with the NHL's doctors in Sochi, but Sweden spokesman Anders Feltenmark confirmed Zetterberg is out Friday before the team faced Switzerland.

Said Sweden team doctor Bjorn Waldeback regarding Zetterberg's herniated disk: "There is no chance at all in the time we've got here that he will be able to train or play. It was no tough decision as this was no borderline case. For people who know medicine it is obvious that this couldn't continue."

The four-time Olympian's absence is another big blow to the Swedes, who were medal favorites before forwards Henrik Sedin and Johan Franzen also were forced to skip the Olympics with injuries.

Sweden still has ample offensive firepower, but depth and shifting lines could be a problem when the elimination portion of the tournament begins next week. Sweden can't replace the 33-year-old Zetterberg on its 25-man roster, which is locked after the team's first game.

Sweden head coach Par Marts says his team has to step up now.

"This is not what we wanted to happen but now it has and all we can do is see who will step up to fill the void," Marts told reporters Friday ahead of his team's game with Switzerland. "Patrik Berglund now gets to play a bit more and take more initiatives to grow."

Henrik Sedin pulled out of the Olympics recently with a rib injury, and Franzen was unable to travel to Sochi because of a concussion.

Defenseman Niklas Kronwall, Zetterberg's teammate in Detroit, is expected to replace him as Sweden's captain.

Zetterberg is headed home to Detroit and might need surgery, which could seriously effect the Red Wings' postseason hopes. Detroit is fighting for a playoff spot in the Eastern Conference.

The injury also has bothered the Swedes' first-line center during the Red Wings' season, forcing him to miss 11 games. He has been in and out of Detroit's lineup in recent weeks.

Zetterberg won a gold medal with Sweden in Turin in 2006. He has scored five goals in his four Olympic appearances.

Information from ESPN.com's Pierre LeBrun and The Associated Press was used in this report.