Czech Republic

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Petra Kvitova of the Czech Republic returns the ball to Venus Williams of the U.S. during the third day of the WTA Qatar Ladies Open in Doha, Qatar, Wednesday, Feb. 12, 2014. (AP Photo/Osama Faisal)

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Jiri Vesely, of the Czech Republic, watches his return to Jack Sock, of the United States, at the U.S. National Indoor Tennis Championships on Wednesday, Feb. 12, 2014, in Memphis, Tenn. (AP Photo/Rogelio V. Solis)

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Jack Sock reaches to hit a return to Jiri Vesely, of Czech Republic, in the second round match at the U.S. National Indoor Tennis Championships on Wednesday, Feb. 12, 2014, in Memphis, Tenn. (AP Photo/Rogelio V. Solis)

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Jack Sock watches his return to Jiri Vesely, of Czech Republic, in the second round match at the U.S. National Indoor Tennis Championships on Wednesday, Feb. 12, 2014, in Memphis, Tenn. (AP Photo/Rogelio V. Solis)

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Czech Republic forward Michael Frolik, right, trips against Sweden forward Gabriel Landeskog in the third period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. Sweden won 4-2.(AP Photo/Julio Cortez)

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Sweden defenseman Henrik Tallinder trips over Sweden goaltender Henrik Lundqvist in the first period of a men's ice hockey game against the Czech Republic at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Bruce Bennett, Pool)

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Sweden defenseman Erik Karlsson (65) loses his footing as he passes the puck from Czech Republic forward Martin Erat in the first period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Mark Humphrey)

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Czech Republic forward Martin Erat (91) gets tangled up with Sweden defenseman Erik Karlsson in the second period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Julio Cortez)

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Czech Republic forward Roman Cervenka fights for control of the puck against Sweden forward Nicklas Backstrom in the first period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Mark Humphrey)

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Sweden forward Henrik Zetterberg, right, reacts in front of Czech Republic defenseman Tomas Kaberle after Sweden scored a goal in the second period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Mark Humphrey)

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Sweden celebrates a goal against the Czech Republic in the second period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Mark Humphrey)

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Sweden forward Loui Eriksson looks for the rebound agianst the Czech Republic in the second period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Mark Humphrey)

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The Swedish men's ice hockey team celebrates as Czech Republic goaltender Jakub Kovar checks the scoreboard after Sweden scored its second goal of the first period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Julio Cortez)

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A linesman breaks up a scuffle between Sweden forward Patrik Berglund, left, and Czech Republic forward David Krejci in the first period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Mark Humphrey)

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Sweden defenseman Niklas Kronwall (55) collides with Czech Republic forward Patrik Elias in the first period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Mark Humphrey)

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Sweden forward Patrik Berglund is congratulated by teammates after scoring a goal against the the Czech Republic in the first period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Mark Humphrey)

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Sweden forward Nicklas Backstrom tries to wrap the puck around the goal against Czech Republic goaltender Jakub Kovar in the first period of a men's ice hockey game at the 2014 Winter Olympics, Wednesday, Feb. 12, 2014, in Sochi, Russia. (AP Photo/Julio Cortez)