A topsy-turvy end to Group C saw top team Zambia humbled by struggling Costa Rica and Iran denied a place in the knockout rounds by a late match-winner for Portugal.
Three teams are heading to the round of 16 from this group: Zambia, Portugal, and Costa Rica.
Costa Rica 1-0 Zambia
Los Ticos became the first third-placed team from the group stage to be certain of qualification for the knockout rounds with this result. 'Keeper Erick Pineda has played very well for Costa Rica in this tournament to date, and this game was no different.