There was a time when Igor Akinfeev was the best young goalkeeper in the world. But he picked up multiple bad injuries, never left CSKA Moscow and has been quite average for a long time. He has been a dependable kind of average, however, as in he doesn't usually do things like this.
That'll be credited as a goal for Lee Keun-Ho, though it was basically an own goal, and a really bad one at that. It's unlikely we'll see a worse error at this World Cup.