Six days left before the start of the World Cup 2018, where the hosts, Russia, face Saudi Arabia in the 1st match of Group A. At this point, it would be interesting to analyze the impact of some environmental factors on the performance of the countries participating in the biggest sports event in the world. Every detail is significant at this stage of the tournament.

“I am not racist but there are too many foreigners in youth teams” states Arrigo Sacchi, former Milan and Italy boss. Fans all over the world debate on whether the use of foreign players enhances the performance of the team or not, as it is partially believed that athletes from another country could never fully understand the history and values that each club preserves.