A foreign news agency cited the Koreans' speed, sharp tactics and hunger as major contributors to putting Greece in all sorts of trouble.
The AFP pinpointed "lax defending" as major contributor to the first goal when the Greek defense failed to deal with Ki Sung-yueng's freekick from beside the left corner flag.
The ball skimmed over the heads of the Greek defense for Lee Jung-soo to volley in at the far post.
The Koreans wrapped up a deserved three points early in the second half when captain Park Ji-sung beat off defenders Avraam Papadopoulos and Loukas Vyntra and slotted the ball past keeper Alexandros Tzorvas.
Shortly after the 2-0 victory of the Korean team, the AFP interviewed its coach Huh Jung-moo.
"This is only the start. My team played well, we prepared thoroughly, I'd like to congratulate them.
"It's win number one but we have to continue to grow. My heart is filled with happiness, now we have to prepare for the next game."
"Argentina are one of the candidates for the title, they have a lot of good players, but I have told my players to remain confident.
"No matter how strong they are if we do what we have to do we can manage to grow.
"Just because it's Argentina one shouldn't be defeatist."
Huh, the first Korean to coach the national side in over a decade, suggested his team could have swelled their goal account even further against the Greeks.
"If we'd been a little calmer we could have had more goals. We weren't perfect but my players lived up to expectations.
"I had a meeting with my team before we left our hotel this morning and told them that if we scored first not to stop attacking.
"We passed the ball round very fast, and very accurately, we played to win."
The agency praised high team leader Park Ji-sung. "As the influential Manchester United midfielder, he was another refusing to be intimidated by the identity of their next World Cup rivals."
"Argentina are the strongest side in the group and could be finalists. But we thought about them when we played Spain in a pre World Cup friendly...the unexpected can always happen..we're looking forward to it," Park was quoted as saying.
This was only South Korea's second ever World Cup win away from home.