Co-hosts South Korea reached the second round of the World Cup for the first time when they beat nine-man Portugal 1-0 and dumped them out of the tournament.
A 71st minute goal from Park Ji-Sung sent the stadium into raptures and put the Koreans in the last 16 with co-hosts Japan, the first time the two teams from Asia have made it through the first round.
Portugal, one of the pre-tournament favourites, went out of the competition with just one victory, while the United States scrambled into the second round despite losing 3-1 to Poland.
Portugal players left the pitch in tears.
The Portuguese campaign finished in disarray when midfielder Joao Pinto was dismissed in the 27th minute after crashing in from behind on Park in their final group D game.
Joao Pinto had to be calmed down and led from the pitch after arguing with Argentine referee Angel Sanchez.
Portugal defender and captain Fernando Couto held Sanchez by the face as the players argued with the referee over the decision, losing their composure in an intense atmosphere, fuelled by the screaming of 50,000 Korean fans.
In the 66th minute defender Beto Severo was sent off for his second bookable offence, a foul on midfielder Lee Young-Pyo.
Portugal came close to equalising on several occasions, late on through Nuno Gomes and Sergio Conceicao who hit the post.
Both teams came close to scoring in an electrifying last few minutes of the game.
Before the tournament began, Korea had not won a single World Cup game in their previous five finals and were expected to struggle to get past the first-round.
But a 2-0 defeat of Poland in their opening game, a 1-1 draw with the United States and Wednesday's victory has steered them towards a second-round clash with Italy.
Park took his goal well cutting in from the right to shoot through the legs of Portugal keeper Vitor Baia.
Portugal came to the tournament having scored more goals than any other European country in the qualifying.