Before every World Cup, countless players are talked up as those who will light up the tournament or potential breakout stars. We doubt any of our top five performers from the group stage would have featured prominently, if at all, in any of those discussions. Arsenal's Takehiro Tomiyasu has only made two substitute appearances for Japan but tops the list with an average rating of 8.71 (we've stipulated players must have featured in at least two games to make the cut). Celtic strike...