Switzerland's goalkeeper Yvon Mvogo, left, and goalkeeper Yann Sommer play with a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560219
Switzerland's goalkeeper Yann Sommer talks to team member during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560213
Switzerland's head coach Vladimir Petkovic talks to his players during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560205
Switzerland's Granit Xhaka reacts during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560201
Switzerland's head coach Vladimir Petkovic, second right, looks at his players during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560197
Switzerland's Stephan Lichtsteiner, second left, and Johan Djourou struggle for a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018.26.06.2018#5560193
Switzerland's Mario Gavranovic, centre, struggles for a ball with his teammates during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560182
From left, Switzerland's Manuel Akanji, Blerim Dzemaili, Mario Gavranovic and Granit Xhaka struggle for a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560171
Switzerland's head coach Vladimir Petkovic walks during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560154
Switzerland's head coach Vladimir Petkovic walks during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560151
Switzerland's head coach Vladimir Petkovic, left, jokes with team member during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560150
Switzerland's head coach Vladimir Petkovic walks during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560143
Switzerland's Ricardo Rodriguez plays with a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560138
Switzerland's Gelson Fernandes, left, and Switzerland's Johan Djourou struggle for a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560135
Switzerland's Xherdan Shaqiri kicks a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560116
Switzerland's goalkeeper Yvon Mvogo, right, catches a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560112
Switzerland's Xherdan Shaqiri kicks a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560110
Switzerland's Xherdan Shaqiri kicks a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560105
Switzerland's Fabian Schaer, left, and Switzerland's Xherdan Shaqiri kick a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560102
Switzerland's Steven Zuber runs during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560100
Switzerland's Manuel Akanji runs during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560092
Switzerland's Ricardo Rodriguez runs during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560089
Switzerland's head coach Vladimir Petkovic, right, walks during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560079
Switzerland's Valon Behrami runs during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560074
Switzerland's Valon Behrami runs during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560072
From left, Switzerland's Ricardo Rodriguez, Stephan Lichtsteiner and Switzerland's Blerim Dzemaili attend a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560068
A ball lies on a pitch during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560015
Switzerland's team member prepares equipment during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5560010
Team member kicks a ball during a national team's training session at the Nizhny Novgorod Stadium in Nizhny Novgorod, Russia, June 26, 2018. 26.06.2018#5559980
