A sign flashes the number of football fans at the Luzhniki Stadium in Moscow during the curtain-raiser for the 2018 World Cup between Russia and Saudi Arabia. /VCG Photo

Russia fans with painted faces give the thumbs up during the 2018 FIFA World Cup Russia Group A match between Russia and Saudi Arabia at the Luzhniki Stadium in Moscow, Russia. /VCG Photo

Russia fans before the 2018 FIFA World Cup Group A match between Russia and Saudi Arabia at the Luzhniki Stadium in Moscow, Russia. /VCG Photo

People watch the 2018 FIFA World Cup Group A match between Russia and Saudi Arabia at a bar in Beijing, China. /VCG Photo

A Russia fan with football-themed glasses ahead of the 2018 FIFA World Cup Group A match between Russia and Saudi Arabia at the Luzhniki Stadium in Moscow, Russia. /VCG Photo

Fans from China have their photo taken during the 2018 FIFA World Cup Russia group A match between Russia and Saudi Arabia at the Luzhniki Stadium in Moscow, Russia. /VCG Photo

A football fan gets his face painted prior to the 2018 FIFA World Cup Russia Group A match between Russia and Saudi Arabia at the Luzhniki Stadium in Moscow, Russia. /VCG Photo

Russia's Alan Dzagoev holds his leg after sustaining an injury. He was later replaced by Kai Pfaffenbach. /VCG Photo

A soccer fan watches on a big screen the opening ceremony of the FIFA World Cup in downtown Sao Paulo, Brazil. /VCG Photo

The final score is displayed after the Russia 2018 World Cup Group A football match between Russia and Saudi Arabia at the Luzhniki Stadium in Moscow, Russia. /VCG Photo