Switzerland's Steven Zuber (2nd R) fights for the ball against Iceland's Sverrir Ingasson and Ragnar Sigurdsson during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Switzerland's Haris Seferovic (2nd R) scores a goal against Iceland's goalkeeper Hannes Halldorsson during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Switzerland's Albian Ajeti (Top) fights for the ball against Iceland's Sverrir Ingasson during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Switzerland's Albian Ajeti (C) scores a goal during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Switzerland's coach Vladimir Petkovic smiles during during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Iceland's Bjoern Sigurdarsson (R) fights for the ball against Switzerland's Fabian Schaer during during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Switzerland's Xherdan Shaqiri reacts after scoring during during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Switzerland's Albian Ajeti celebrates after scoring during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Switzerland's Steven Zuber (R) and Ricardo Rodriguez react after scoring during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)

Switzerland's players celebrate after scoring during during the UEFA Nations League group A2 match between Switzerland and Iceland at the Kybunpark stadium in St. Gallen, Switzerland, Sept. 8, 2018. Switzerland won 6-0. (Xinhua/Ruben Sprich)