The midfielder was not too downhearted after the 2-1 loss to Uruguay...
However, the recent Celtic signing was quick to state his pride at the Koreans' achievements, as well as to offer his thoughts on his side's upcoming international prospects.
Speaking exclusively to Goal.com, the tall midfielder acknowledged that he felt his side should have won the match.
"Yes, but you know, we played brilliantly today, and we made a lot of chances to score," he said. "We just didn't take them.
"But I'm really happy with the boys who played today. We showed that Asian football is good enough to play against the world."
A Luis Suarez double eventually sank Ki's side, and the 21-year-old stated that it was that type of talent upfront that gave Uruguay the prospect of victory going forward.
"How far can Uruguay go? I'm not sure, but I think they're a good team, and their two strikers are at the top level of the world," he continued. "If they play well they can maybe think about the semi-final."
South Korea's next tournament comes in January, when the 2011 Asian Cup begins in Qatar. Despite being drawn in a tough group with Australia, Bahrain, and India, there is little doubt in Sung Yueng's mind that silverware is a distinct possibility.
"We still have several months to play before that, and of course we need to rest now, but we want to win the Asian Cup as well," said the ex-FC Seoul youngster.
"I think we played brilliantly this World Cup, and if we play like this at the Asian Cup then maybe we can win it.