How many squad members play their club football in each country. Countries with 4+ players charted; full list below.
Club league each player belongs to (from the club's Wikipedia infobox). Leagues with 6+ players charted; full list (with league country) below.
Clubs supplying the most World Cup players. Clubs with 7+ players charted; full list (with club country) below.
Mean player age as of (World Cup start), descending (oldest squads first).
Mean international appearances, descending (most experienced squads first).
Mean international goals, descending.
Squad scoring rate: total goals ÷ total caps, descending. Rewards squads whose goals come from fewer appearances.
Player(s) whose club sits at the deepest level on its national pyramid (tier ). Ties all shown.
Extreme players across the whole tournament. Ties all shown.