In Group H, nothing could separate Uruguay and South Korea as they played out a blank draw in their opening game.
The Asians frustrated Uruguay, but did not create many clear-cut opportunities.Their best fell to Hwang Ui-jo, who fired over the bar in the first half, before Uruguay captain Diego Godin headed a corner against the post.
The draw leaves Group H wide open, with many seeing it as a 3-way battle for qualification to the knockout stages between Uruguay, South Korea and Cristiano Ronaldo's Portugal, who are up against Ghana, at the moment.