Germany's defeat against Mexico put them in big trouble but their last gasp win against Sweden has put them back on course to go through to the knockout stage.
If Korea are to produce an unlikely result, they need to score goals and their best hope in that regard is the Tottenham forward.
Hopefully their opening two games have been all they needed for a wake-up call, because another lethargic start or more vulnerability on the counter could prove fatal on Wednesday - not to mention, it would signal that they haven't learned their lessons from their humbling loss against Mexico and narrow win over Sweden. This media house does not correct any spelling or grammatical error within press releases and commentaries.
"We have strong competition with us in the squad", Low said.
He may even be partnered with club team-mate Niklas Sule, given Antonio Rudiger's shaky performance against Sweden.
Coach Shin Tae-yong was realistic about the chances of his team pulling off the feat but said they would take confidence from the fact that the Germans had also made a disappointing start to their campaign in Russian Federation.
In the pre-game press conference, Germany superstars Marco Reus and Timo Werner stressed that they need to be wary of South Korea's pace in the attacking department.
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"We have to do our duty and win the game, preferably not by just 1-0 but higher".
"A medical inspection at a hospital showed that Ki damaged his left calf muscle", a Korean Football Association (KFA) official told Yonhap News.
Title-holders Germany have picked up three points from their first two group F matches against Mexico and Sweden.
- Germany have won all five of their World Cup games against Asian opponents, scoring 19 goals in total and keeping clean sheets in each of their last three.
Germany have been poor so far at the World Cup. However, Germany can avoid such a scenario simply by beating South Korea by two goals or more.
After missing out on Brazil four years ago when Mario Goetze's extra-time victor against Argentina handed Germany their fourth World Cup title, Reus arguably has more reason than most to make sure Die Mannschaft avoid an early departure.
Marco Reus has been one of the best players for Germany in this World Cup.
Argentina and Lionel Messi will play France, who were held to a goalless draw by Denmark on Tuesday, in Kazan on Saturday in their last 16 tie.
Toni Kroos has been involved in five goals in his last five World Cup games (three goals and two assists).