Czech Republic

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United States' CoCo Vandeweghe hits a shot back to Czech Republic's Marketa Vondrousova during a Fed Cup semifinal tennis match, Saturday, April 22, 2017, in Wesley Chapel, Fla. (AP Photo/John Raoux)

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Minnesota Wild goalie Devan Dubnyk, left, stops a shot by St. Louis Blues' Vladimir Sobotk, right, of the Czech Republic during the first period of Game 1 of an NHL hockey first-round playoff series Wednesday, April 12, 2017, in St. Paul, Minn. (AP Photo/Jim Mone)

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Anaheim Ducks' Ondrej Kase, center, of the Czech Republic, and Los Angeles Kings' Nic Dowd, right, look at the puck in the air during the second period of an NHL hockey game Sunday, April 9, 2017, in Anaheim, Calif. (AP Photo/Jae C. Hong)

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New York Islanders' Joshua Ho-Sang, left, and New Jersey Devils center Pavel Zacha, of the Czech Republic, compete for the puck during the first period of an NHL hockey game, Saturday, April 8, 2017, in Newark, N.J. (AP Photo/Julio Cortez)

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New York Islanders center Brock Nelson (29) maneuvers the puck between Nashville Predators defenseman Roman Josi (59), of Switzerland, and left wing Kevin Fiala (56), of the Czech Republic, during the first period of an NHL hockey game Tuesday, April 4, 2017, in Nashville, Tenn. (AP Photo/Mark Zaleski)

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Dallas Stars, from left, Gemel Smith; Jason Spezza; Radek Faksa, of the Czech Republic; and Esa Lindell, of Finland, celebrate a goal as Tampa Bay Lightning goalie Peter Budaj, of Slovakia, reacts during the second period of an NHL hockey game Sunday, April 2, 2017, in Tampa, Fla. (AP Photo/Mike Carlson)

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Nashville Predators left wing Kevin Fiala (56), of Czech Republic, celebrates with center Calle Jarnkrok (19), of Sweden, after Fiala scored a goal against the Minnesota Wild during the second period of an NHL hockey game Saturday, April 1, 2017, in Nashville, Tenn. (AP Photo/Mark Zaleski)

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Nashville Predators left wing Kevin Fiala (56), of Czech Republic, scores a goal past Minnesota Wild goalie Alex Stalock (32) as defenseman Christian Folin (5), of Sweden, defends during the second period of an NHL hockey game Saturday, April 1, 2017, in Nashville, Tenn. (AP Photo/Mark Zaleski)

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FILE - In this Jan. 6, 2015, file photo, New Jersey Devils' Patrik Elias, of the Czech Republic, takes a curtain call after an NHL hockey game where Elias recorded his 1,000 career point, against the Buffalo Sabres, in Newark, N.J. Devils’ all-time leading scorer Patrik Elias is retiring after a career that spanned almost two decades and included two Stanley Cup titles. The 40-year-old native of the Czech Republic announced his retirement in a statement on Friday, March 31, 2017. (AP Photo/Julio Cortez, File)

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FILE - In this April 13, 2015, file photo, New Jersey Devils center Patrik Elias, of Czech Republic. carries his equipment bag as he leaves the locker room in Newark, N.J. Devils’ all-time leading scorer Patrik Elias is retiring after a career that spanned almost two decades and included two Stanley Cup titles. The 40-year-old native of the Czech Republic announced his retirement in a statement on Friday, March 31, 2017. (AP Photo/Mel Evans, File)

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Roger Federer, of Switzerland, celebrates after defeating Tomas Berdych, of the Czech Republic, 6-2, 3-6, 7-6 (6) at the Miami Open tennis tournament, Thursday, March 30, 2017, in Key Biscayne, Fla. (AP Photo/Wilfredo Lee)

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Roger Federer, right, of Switzerland, and Tomas Berdych, of the Czech Republic, shake hands after Federer defeated Berdych 6-2, 3-6, 7-6 (6) during a tennis match at the Miami Open, Thursday, March 30, 2017 in Key Biscayne, Fla. (AP Photo/Wilfredo Lee)