Nigeria and Portugal progress, Brazil held again
Nigeria and Portugal became the first teams to qualify for the Olympic men's football tournament quarter-finals, while hosts Brazil were held again.
The 2008 runners-up Nigeria backed up their thrilling 5-4 win over Japan with a 1-0 victory against Group B opponents Sweden, courtesy of Sadiq Umar's first-half goal.
Portugal, who defeated Argentina in their Rio 2016 opener, made it two wins from two in Group D on Sunday with a 2-1 come-from-behind triumph against Honduras.
Neymar's Brazil are still without a goal from their opening two Group A games of the tournament, held to another 0-0 draw, this time by Iraq.
Denmark boosted their chances of progression to the next round with a tense 1-0 win against South Africa, while Argentina got off the mark in Group D with a 2-1 victory over Algeria.
Germany scored late through Serge Gnabry to salvage a 3-3 draw with South Korea in Group C, and Japan battled from two goals down to secure a 2-2 draw against Group B rivals Colombia.
Meanwhile, Fiji scored their first ever Olympic goal in their Group C clash with Mexico, but despite leading at half-time went down 5-1 to the defending champions.
HIGHLIGHT
Wellington Phoenix forward Roy Krishna made history with Fiji's first goal at the Olympics, heading the South Pacific nation into a 10th-minute lead.
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QUOTES
"I take the blame for every chance I could not take advantage of, but I made one and I took the pressure off myself. It was as if I was fighting against the goal," Argentina's match-winner Jonathan Calleri on his performance in front of goal.
"Thirty seconds is too early to say we went wrong in the game. What happened was a mistake, a bad pass and the Honduras' player set up a goal for the striker, in a very difficult area to mark," said Portugal coach Rui Jorge, after his side went down inside the first 30 seconds in their win against Honduras.
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