CALGARY -- Defenseman Jakob Chychrun will not play for Canada at the 2015 Ivan Hlinka Memorial Cup following shoulder surgery.

"He’s injured. He had shoulder surgery in April to repair his shoulder," Hockey Canada director of player personnel Ryan Jankowski said Friday. "We thought maybe at one point he might be all right and we wanted to name him. He's going to be unable to participate through the whole thing, through the camp and the Hlinka. He's out."

The U-18 tournament will be played in Bratislava, Slovakia, and Breclav, Czech Republic, from Aug. 10-15.

In 42 games with the Sarnia Sting last season, Chychrun had 16 goals and 17 assists, and was named a third-team Ontario Hockey League all-star. He missed the final five games of the regular season and did not play in the OHL playoffs.

Right wing Denis Gurianov, a first-round pick (No. 12) of the Dallas Stars at the 2015 NHL Draft, will come to North American to play for Russia during the Canada National Junior Team Summer Development Camp in Calgary, according to Stars Inside Edge.

Russia, Canada and the Czech Republic will practice together and play exhibition games against each other during the camp, which runs Aug. 1-6. Gurianov will be among 22 players attending the camp that will help establish the roster for Russia at the 2016 IIHF World Junior Championship.

Center Pavel Zacha and defenseman Jakub Zboril, each first-round picks in the 2015 NHL Draft, highlight the roster of Czech Republic players invited to participate in Canada's junior development camp in Calgary next month.

The camp, which will be held from Aug. 1-6, will feature practices and exhibition games against Canada and Russia. Zacha, selected No. 6 by the New Jersey Devils, and Zboril (Boston Bruins, No. 13) will be among 22 players attending the camp that will help establish the roster for Czech Republic at the 2016 IIHF World Junior Championship.

Saint John Sea Dogs defenseman Thomas Chabot, a first-round selection of the Ottawa Senators in the 2015 NHL Draft, has been added to Canada's national junior team development camp roster in Calgary.

Chabot will be among 40 players attending the camp that will help establish the roster for Canada in the 2016 IIHF World Junior Championship. Chabot will replace Oshawa Generals defenseman Mitchell Vande Sompel (New York Islanders, 2015), who sustained an injury and is unable to attend.

The camp will be held from Aug. 1-6, and feature practices and exhibition games against the Czech Republic and Russia.

Center Auston Matthews and left wing Matthew Tkachuk, each projected to be selected top-five in the 2016 NHL Draft, will be representing Team White when the United States holds its national junior evaluation camp in Lake Placid, N.Y., from Aug. 1-8.

USA Hockey announced the rosters for Team White and Team Blue for the opening three days of practices and scrimmages against Finland and Sweden. The 39 invitees will be auditioning for spots on the team that will represent the country at the 2016 IIHF World Junior Championship in Helsinki, Finland, from Dec. 26, 2015-Jan. 5, 2016.