Matthew Conger and Simon Lount, both of New Zealand, will act as the fourth official and reserve AR.
It’s the third time the three officials have been assigned together, having worked in the same roles for Portugal’s 1-0 win over Morocco and South Korea’s 2-0 win over Germany in the Group Stages.
Despite losing their tournament opener against Japan, Colombia turned things around with wins over Poland and Senegal to ensure they finished top of Group H.
Their opponents finished runners-up to Belgium in Group G after slipping to defeat in their final group game, but have Golden Boot leader Harry Kane in their ranks – the forward found the net five times in wins over Tunisia and CONCACAF nation Panama.
The winners will face either Sweden or Switzerland at the Quarter-Final stage.
The match will be Geiger’s 10th assignment at the tournament, far surpassing the five he fulfilled at the 2014 World Cup in Brazil. It is Fletcher’s eighth assignment and the third for Anderson.