After a frenetic first round, the knockout stages of the Olympics men's football competition are now set to begin. And even before Saturday's quarter-finals, there have been plenty of upsets to keep crowds across Brazil on the edge of their seats.
With the exits of Argentina and Mexico, the tournament has already been shorn of its last three gold medal winners. Brazil, meanwhile, came roaring back to form after a poor start but face a tough challenge to make the semis on home turf.
The Selecao's all-South American clash against Colombia is one of the highlights of a last eight that should have all the excitement and tension of the group stages.