Sorry that these are quite so late. The combo of the number of players, the relatively late date that the final squads were announced and a busy time at work meant that I couldn’t get the diagram anything like finished until the 12th, and I then went to Sweden for a week for work.
GO VISIT STOCKHOLM, IT’S LOVELY!
And then I wanted to tinker with the colours and force separation a little because part of the diagram was so overlapped.
Having now had the chance to tinker, please see the 2018 World Cup team interaction network diagram, with the players being attached to the team they last played for, with a cut off date of the 26th of May. The teams are as accurate as Wikipedia can make them. (You’re all lucky you missed the great “Inter” vs “Internazionale” revert fest.)
As you can see, the top of the diagram is basically one giant smush, showing the international flavour of club football nowadays.
England are the only team where all of their players play in their home league, while Sweden and Senegal are the only teams where no-one plays in their home league. (A very simple bar chart pending on this topic some time soon.)
Iran, Panama and Peru are the least connected teams, while several others are so interconnected it’s hard to see them, and almost impossible to prevent them overlapping (looking at you, Croatia and Portugal).
This is one of the situations where the community view helps:
Using the community view makes it easier to see the team names. It also makes it easier to see which teams are tightly related to each other due to players either playing in each others leagues or players from both teams playing for teams from a third country.
There is a giant community of Croatia, France, Germany and Spain followed by a slightly smaller one of Brazil, Belgium, England (due to Manchester City). Then there are four two team groupings; Senegal and Poland, Australia and Saudi Arabia, Argentina and Colombia and Egypt and Tunisia. Everyone else is their own community.
It’ll be interesting to see how the inter-relations develop as teams are knocked out.