In the World Cup, in Russia, Croatia are now at the top of what's being called the "group of death," with a win Saturday over Nigeria 2-nil.
One of those points was an own goal by the Nigerian side.
Group D also includes Argentina, who had to settle for a disappointing 1-1 draw against Iceland earlier in the day.
The Argentine captain, Lionel Messi, had a chance to win it with a penalty kick that was readily blocked.
The draw felt like a victory for Iceland, though, who are in the World Cup for the first time.
In Group C, Australia fell 2-to-1 to an underwhelming and relatively inexperienced French side.
France got the first ever goal awarded by goal-line technology... after a strike by Paul Pogba hit the crossbar and was then shown by cameras to have bounced just on the other side of the goal line.
Also in Group C, Denmark got a hard-fought 1-nil win over Peru, who are in the World cup for the first time since 1986.
Lots of shots on goal for the Peruvians, but excellent goalkeeping by Denmark.
Now, Sunday's action includes Costa Rica-Serbia,... Germany-Mexico,... and Brazil-Switzerland.
As for South Korea, they'll play their first match on Monday against Sweden.
And that'll kick off at 9 o'clock PM, Korea time.