France are already through but a draw against Tunisia will also seal top spot.
Australia will be through if they beat Denmark, but a draw would allow Tunisia to claim second spot if they upset France. Denmark have to win to have any chance of going through.
If Denmark and Tunisia both win their games, the team to progress will be decided by goal difference or the other criteria mentioned below.
Post update
Good afternoon!
After groups A and B were wrapped up yesterday it is the turns of C and D to take centre stage today.
Group D is our focus first with Australia, Denmark and Tunisia looking to join France in progressing to the last 16.
There's four games in total today, but here the two our focus is on initially, with these games kicking off at 15:00 GMT:
Australia v Denmark
Tunisia v France
Can Australia emulate class of 2006?
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Sixteen years ago, Harry Kewell scored a late equaliser for Australia against Croatia to send the Socceroos in the last 16 of the World Cup.
That's the last time they reached the knockout stage of the tournament but that long wait could be about to come to an end, as they face Denmark with a huge chance to emulate the class of 2006 and progress from the group stage.
But a win for Denmark would see them leapfrog Australia into the top two of Group D and with it a place in the last 16.
Live Reporting
Harry Poole and Gary Rose
All times stated are UK
Who needs what in Group D
This is how things look in Group D.
France are already through but a draw against Tunisia will also seal top spot.
Australia will be through if they beat Denmark, but a draw would allow Tunisia to claim second spot if they upset France. Denmark have to win to have any chance of going through.
If Denmark and Tunisia both win their games, the team to progress will be decided by goal difference or the other criteria mentioned below.
Post update
Good afternoon!
After groups A and B were wrapped up yesterday it is the turns of C and D to take centre stage today.
Group D is our focus first with Australia, Denmark and Tunisia looking to join France in progressing to the last 16.
There's four games in total today, but here the two our focus is on initially, with these games kicking off at 15:00 GMT:
Can Australia emulate class of 2006?
Sixteen years ago, Harry Kewell scored a late equaliser for Australia against Croatia to send the Socceroos in the last 16 of the World Cup.
That's the last time they reached the knockout stage of the tournament but that long wait could be about to come to an end, as they face Denmark with a huge chance to emulate the class of 2006 and progress from the group stage.
But a win for Denmark would see them leapfrog Australia into the top two of Group D and with it a place in the last 16.
A huge game for both sides.