Group B of the 1986 FIFA World Cup was one of the groups of nations competing at the 1986 FIFA World Cup. The group's first round of matches began on 3 June and its last matches were played on 11 June. Matches were played at the Estadio Azteca in Mexico City and at the Estadio Nemesio Díez in Toluca. Host Mexico topped the group, joined in the second round by Belgium and by Paraguay, who were making their first appearance in the finals since 1958. Iraq, making their debut in the World Cup, lost all three of their matches and scored just one goal.
This match caused controversy as the referee, Edwin Picon-Ackong, blew the whistle for half time a split-second before Iraq striker Ahmed Radhi's header hit the back of the net, and the goal was ruled out. Picon-Ackong received a lot of criticism for blowing the whistle when Iraq had such a big goalscoring opportunity.
This match caused controversy as referee Jesús Díaz gave a yellow card to Iraq's Basil Gorgis in a case of mistaken identity (the yellow was supposed to be given to Ghanim Oraibi) while the score was 2–0 to Belgium. Gorgis sarcastically applauded Díaz's incorrect decision which led to Gorgis getting sent off and Iraq lost 2–1.