South Korea defeated Colombia in a penalty shootout at the FIFA Under-20 World Cup on Wednesday to join Ghana, Chile and Iraq in the quarter-finals.
Having played out a 1-1 draw after extra-time, Colombia were trailing 8-7 in the shootout when defender Deivy Balanta sent the last penalty over the crossbar.
South Korea next play Iraq, who needed extra-time to beat Paraguay 1-0.
Ghana and Chile also meet in the quarter-finals after both teams won their round-of-16 matches over 90 minutes earlier in the day. Ghana came from a goal down to beat Portugal 3-2, while two late goals earned Chile a 2-0 victory over Croatia.
Balanta’s spot-kick was not the only one that failed to find the net. Earlier in the shootout, Song Ju-hun missed for South Korea, while Felipe Aguilar saw his attempt saved by goalkeeper Lee Chang-geun.
Song had given South Korea the lead in the 16th minute when he beat goalkeeper Cristian Bonilla with a low shot after the Colombia defense failed to clear from the penalty area.
Colombia long pressed for an equalizer and had to wait until the fourth minute of stoppage-time before captain Juan Quintero scored with a fierce free-kick that beat Lee at the near post.
The penalty shootout soon became inevitable as neither side was willing to take any risks by pushing forward in extra-time.
It was different story in the other late game, though, after Iraq and Paraguay has finished 0-0 after 90 minutes, with the South Americans having been reduced to 10 men in the 80th minute.
Iraq substitute Farhan Shakor scored the only goal with a firm header past goalkeeper Diego Morel in the fifth minute of extra-time.
Paraguay, who defeated Argentina in qualifying, were without suspended captain Gustavo Gomez. They also lost Arnaldo Sanabria, who was booked in the 70th minute and sent off after another foul 10 minutes later.
Iraq continued a remarkable run in their first appearance in the tournament for 12 years. They won Group E, where they drew 2-2 with England, and now play in the quarter-finals for the second time — having also reached the last eight in 1989.
Earlier, substitute Yiadom Boakye set up the equalizer and then scored a late winner as Ghana rallied to beat Portugal.
Ghana were 2-1 down when Boakye came on the 75th minute. Four minutes later, Portugal goalkeeper Jose Sa saved his shot, but allowed Michael Anaba to pounce on the rebound for the equalizer.
Boakye then followed up by sending a free-kick through a two-man wall in the 85th minute.
Kennedy Ashia had put Ghana ahead with a long-range effort in the 19th minute, but defenders Tiago Ferreira and Edgar both scored within the space of three minutes to put Portugal 2-1 up in the 73rd minute.
Ghana were the last team to qualify for the knockout stage, after losing two group matches and narrowly advancing on goal-difference following a 4-1 defeat of the US.
Portugal, the runners-up in 2011, had scored the most goals in the group stage, but failed to convert two early chances.
Aladje was left unmarked, but sent his effort over the crossbar after 15 seconds, while Bruma, who scored five times in three group matches, shot wide a minute later.
Portugal dominated possession, but ultimately paid the price for failing to make their chances count.
Chile similarly controlled large parts of their match against Croatia, who have never gone beyond the round-of-16, but created few chances.
Nicolas Castillo finally broke the deadlock when he was set up by Sebastian Martinez and headed the ball backward over Croatia goalkeeper Oliver Zelenika in the 81st minute. Four minutes later, Croatia defender Jozo Simunovic sent a Christian Bravo cross past his own goalkeeper.
Chile finished third in 2007, but failed to qualify for the next two editions.
The other two quarter-finals see France face Uzbekistan and Uruguay take on favorites Spain.