Korea suffered a crushing defeat at the hands of Algeria on Sunday, losing 2:4 and effectively forfeiting hopes of advancing to the next round of the World Cup.
In the second match of Group H at Estadio Beira-Rio in Porto Alegre, southeastern Brazil, Korea surrendered three goals in the first half.
Song Heung-min scored in the 49th minute to get the team going, but Yacine Brahimi added the fourth goal for Algeria at the 60th minute to keep the Algerian side three goals ahead.
Korean captain Koo Ja-cheol scored in the 71st minute, but it was not enough to overcome the deficit of the first half.
Korea now sits at the bottom of Group H tied with Russia, each with one point from one draw and one loss, but Russia has the edge on goal difference by one goal.
Belgium is at the top of the group followed by Algeria. Korea would need to beat Belgium by a big margin to go beyond the group stage.