Australia will play in only their second ever World Cup knockout match, as they face off against pre-tournament favourites Argentina in Al Rayyan.
The Ahmad bin Ali Stadium will play host to the showdown between the Socceroos and La Albiceleste and, while Argentina are undoubtedly the stronger side on paper, Australia will be buoyant after their 1-0 win over Denmark to secure their place in the knockouts.
They had Mathew Leckie to thank for that victory, slaloming his way through the Danish defence, before sliding the ball home to make footballing history Down Under.
However, despite the Melbourne City man's heroics, there can be no doubt that Graham Arnold's men are up against the sternest of tests.
After the worst possible start against Saudi Arabia in Lusail, Lionel Scaloni's Argentina seem to have finally found their groove in Qatar.
Convincing wins over Mexico and Poland, both 2-0, has left the national team in a much better place as they look to allow their captain Messi to bow out on the biggest stage, with the World Cup trophy in-hand.
Team News
Argentina
Scaloni appears to have no injury concerns ahead of the game.
Although Angel Di Maria was substituted after an hour against Poland, this is likely due to the intense tournament schedule, as opposed to a fitness issue.
Australia
As for the Socceroos, they should be fully fit also.
Arnold should have Nathaniel Atkinson back in contention but he may not feature from the start, following his side's impressive win over Denmark.
Likely lineups
Argentina XI: Martinez (GK), Molina, Romero, Otamendi, Acuna, De Paul, Fernandez, Mac Allister, Di Maria, Messi, Alvarez
Australia XI: Ryan (GK), Degenek, Souttar, Rowles, Behich, Leckie, Mooy, Irvine, Goodwin, McGree, Duke
Key Players
Argentina: Enzo Fernandez
21-year-old Benfica man Enzo Fernandez only made his full debut for La Albiceleste in the win over Poland but has been a key revelation for Argentina out in Qatar.
First scoring as a substitute against Mexico to seal the points late on, Fernandez dropped a stunning performance on his full debut in the final group game.
Winning two tackles, three aerial duels and assisting Julian Alvarez's goal to win the game, he earned himself a 7.86 match rating on WhoScored.
Australia: Harry Souttar
Stoke defender Harry Souttar has been a key part of these history-making Socceroos.
Against Denmark, he was pivotal again, winning a staggering six aerial duels and making 1 tackle and earning a Player of the Match award with a 7.7 match rating on WhoScored, as his side won 1-0.
Match Details
Where is the match being played?
Argentina vs Australia is being played at the Ahmad bin Ali Stadium, Al Rayyan.
What time is the match kicking off?
The match is kicking off at 7pm (GMT).
Where can I watch the match?
The game is available to watch in the UK on BBC One and BBC iPlayer.
