The Algerians, desperate to end a seven-match World Cup winless run, are pointless and bottom after a 2-1 loss to Group H favourites Belgium.
With the notable exception of their stunning 1982 upset of Germany aside, the story of their World Cup experiences does not make happy reading for the proud Algerians.
The north Africans have never made it past the first round, and Sofiane Feghouli's penalty against Belgium was their first goal in the competition in 28 years.
"Now is not the time for crying, this match is decisive," the 62-year-old noted disciplinarian said.
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Victory meanwhile in Porto Alegre for South Korea would put them on the verge of qualifying.
Pacy Korea produced a solid debut in Friday's 1-1 draw with Russia, a performance that gave coach Hong Myung-Bo's team encouragement after a lacklustre build-up.
Korean defender Park Joo-ho is predicting a tight tussle.
"I don't think either team will have a lot of attacking chances," he said.
"If we can score on the chances that we do get, we should have a good shot at winning."
"I watched the game between Algeria and Belgium," the Bundesliga-based forward who was on the bench for Russia said this week.
"Algeria's attacking players are quick and each has their own quality. Algeria are not an easy target. If we play the match (against Algeria) like we did with Russia, then our chances are good.