South Korea's Hwang Hee-chan scored in the 91st minute to give his team a shocking, come-from-behind 2-1 victory over Portugal and move them into the next round.

Portugal scored just five minutes into the match, but Korea's Kim Young-gwon tied it up in the 27th minute.

Despite the loss, Portugal was already assured of making the knockout stage and they took the opportunity to sub out star Cristiano Ronaldo in the 65th minute.

Uruguay defeated Ghana 2-0 in the other game in the group, but South Korea finished tied with Uruguay at 4 points in the group. The teams were also tied on goal differential and tied head-to-head, so they went to total goals scored to give the edge to Korea.

Several players on Uruguay angrily shouted and gestured at the referees as they left the field, drawing post-match yellow cards. Uruguay missed a penalty kick earlier in the game and were angry about not getting another penalty later in the game.

Portugal goes down as the winner of Group H with South Korea in second. That likely means a meeting with Brazil in the next game for South Korea.

Brazil and Portugal, two of the favorites to win the World Cup, are already into the knockout stage, but they'll have a chance to tune up for the second round in their final group matches on Friday.

In Group G, Brazil faces Cameroon, which needs to win and get a loss from Switzerland to qualify or a draw and better goal differential than the Swiss. Switzerland is facing off with Serbia. Serbia would need to win and get a loss by Cameroon or have a better goal differential. The Swiss just need a win or draw to advance alongside Brazil.

In the other set of games Friday, Portugal faces off with South Korea and Uruguay faces Ghana. Portugal may rest its top players, including Cristiano Ronaldo, so South Korea will be looking to take advantage and grab an upset win. Tottenham star Son Heung-min and South Korea need to win and get a loss from Ghana, or, if that game ends in a draw, beat Ghana in goal differential.

Uruguay, sitting on 1 point just like Korea, needs a similar situation. They'll need to beat Ghana and get a loss from South Korea, or beat Korea out on goal differential if the Portugal-South Korea match ends in a draw.

Here's the schedule for Friday, the final day of group play:

Japan stunned perennial contender Spain with two goals early in the second half to win 2-1 and take the top spot in Group E.

Spain, thanks to a blowout victory over Costa Rica in their first game, advanced on goal differential over Germany. Germany defeated Costa Rica 4-2 in the other game in the group. Costa Rica had a chance to advance, but likely needed to win since the team was so far behind on goal differential.

Japan won on goals by Ritsu Doan in the 48th minute and Ao Tanaka in the 51st minute. Tanaka's goal was initially disallowed due to being offside, but it was reviewed and then allowed.

Japan had made the round of 16 in alternating years the last six World Cups until this year, now going back to back in 2018 and 2022. Japan will play Croatia in the next round while Spain will play Morocco.

Germany has now failed to get out of the group stage in two straight World Cups after winning in 2014 and finishing in the top 4 four tournaments in a row.

The No. 2 team in the world, Belgium, is headed home after a scoreless draw against Croatia in the last match of Group F. Croatia advanced to the knockout stages with the draw.

Belgium had several opportunities to score in the second half, many from star Romelu Lukaku, but could not break through. Lukaku, who has been dealing with a hamstring injury, was subbed in at the half.

In the other game in Group F, Morocco defeated Canada, 2-1, to take the top spot in the group. Hakim Ziyech got the Moroccans on the board quickly in the 4th minute and Youssef En-Nesyri added a second goal in the 23rd minute. The only goal for Canada was actually an own goal by Morocco.

Canada, in its second World Cup ever, has still yet to win a match.

U.S. national team coach Gregg Berhalter tried to keep the focus on Tuesday's game at a press conference as he faced questions about why the U.S. team's Twitter account removed the Islamic emblem from Iran's flag in a post Sunday. He also insisted his team had no knowledge of the post.

The U.S. soccer federation said it removed the logo to show support for those protesting in the country against authoritarian rule and its treatment of women.

Berhalter tried to keep the focus on the uniting power of sports and the World Cup, even as Iran called for the U.S. to be kicked out of the World Cup for altering its flag.

"Sport is something that should bring people together, bring countries together," Berhalter said. "When you look at the Olympics, to see all those countries competing at the same time, is a wonderful event. The World Cup is very similar, where people come from all around the world. Fans come from all around the world, and you get to compete on the field, as brothers, so sport does have the ability to do that."

U.S. captain Tyler Adams was criticized by an Iranian reporter for mispronouncing "Iran," which he apologized for, and he was questioned about discrimination in the U.S., saying it is everywhere but there has been progress. But he also deflected attention back to the game.

"Listen, we support Iran's people and Iran's team. But that being said, you know, we're laser focused on this match as they are as well," Adams, 23, told reporters. "We know how important this is for our progress of our team and what we want to do to prove to our country, you know, how hard we've been working. And we know they want to do exactly the same."

The U.S. must defeat Iran Tuesday to advance to the knockout stage of the tournament.

-ABC News' Karyn Rhodus