For each participant of the World Cup 2018 this experience will be the first in life.
In the 1/8 finals took off the winners of the 2010 World Cup Spaniards and losers finals of the 2014 World Cup Argentina. While the current world champions the Germans did not leave the group, and the winners of the World Cup 2006 Italians and finalists of World Cup 2010 the Dutch did not even qualify for the tournament.
Thus, at the current mundiale there are no players who would have had experience playing in the World Cup finals.
It is already known that Uruguay will meet in the quarterfinals - France, Russia - Croatia, as well as the winner of the Brazil / Mexico pair with the winner Belgium / Japan and Sweden / Switzerland against Colombia / England.