Pull up a stool, grab a cold cider, and let's talk about the absolute circus heading into Atlanta today. Argentina is supposedly the giant of this tournament, the defending champions strolling their way back to the podium. But if you actually watched them four days ago, you know the wheels are starting to wobble on the tractor.

Lionel Messi is 39 years old, and he is playing like a guy who knows this is the final chapter of his biography. He still has the magic, but his legs are gone, and he has to watch his teammates work twice as hard to cover for him. On the other side, Egypt is playing with house money, and they have Mohamed Salah ready to play the spoiler.

This is not going to be a simple walk in the park for the Albiceleste. If they think they can just show up and win, they are going to get punched square in the mouth.

Scaloni is whining while his defense falls apart

First of all, let's look at Lionel Scaloni crying to the media. The man is complaining that his team only has 72 hours of rest before kickoff. You have a squad worth a billion dollars and you are whining about standard tournament recovery?

Cast your mind back to July 3 in Miami. Argentina lined up against Cape Verde in the Round of 32, expecting an easy afternoon of sun and goals. Instead, they got dragged into an absolute street fight, escaping with a 3-2 victory after extra time only because of a lucky bounce.

Messi got his customary goal in the 29th minute, but then the defense went to sleep. Deroy Duarte equalized for Cape Verde in the 59th minute, running right past Nahuel Molina. When Lisandro Martinez scored in the 92nd minute to put Argentina ahead, everyone thought it was over.

But Cape Verde had other plans, and Sidny Lopes Cabral launched a rocket from distance in the 103rd minute to tie it up again. It took a miserable own goal from Diney Borges in the 111th minute to save Argentina from the ultimate humiliation. That is not dominant football; that is a team hanging on by its fingernails.

Let's be critical here: Scaloni's defense is slow, old, and easily rattled. Tagliafico is playing like he has weights in his boots, and Romero is chasing shadows. If they give Salah the same space they gave Duarte, it will be a bloodbath.

The Atlanta connection could decide the night

There is one guy who is not worried about the Atlanta heat, and that is Thiago Almada. This match is a homecoming for him, playing at the Mercedes-Benz Stadium where he used to run the show for Atlanta United. The local fans still love him, and Scaloni is expected to start him in midfield.

Almada needs to be the spark because Rodrigo De Paul has looked like he is running through mud. Enzo Fernandez is trying to distribute, but the midfield lacks any real speed. Almada has the local knowledge and the quick feet to break open Egypt's low block.

But Almada cannot do it all by himself if Lautaro Martinez keeps missing sitters. Lautaro has the work rate of a golden retriever but the finishing of a stormtrooper lately. He needs to convert his chances early, or the pressure will start mounting.

Egypt are ready to drag Argentina into the mud

Now let's look at the Pharaohs, who are currently living in a dream. They reached the Round of 16 for the first time in their history after a grueling match against Australia on July 3. They got a goal from Emam Ashour in the 13th minute, conceded an own goal via Mohamed Hany in the 55th, and eventually won 4-2 on penalties.

They did not play pretty football, but they do not care. Hossam Hassan has turned this squad into a group of survivalists who love defending. They are comfortable letting the opponent have 70 percent possession while they wait for their moment.

And when you have Salah, you only need one moment. Egypt's national team director Ibrahim Hassan has been talking trash all week, telling reporters that while Argentina has Messi, Egypt has Salah. That is the kind of confidence you want in a locker room before a giant-killing mission.

Egypt will be missing Ahmed Fatouh and Mohamed Abdelmoneim due to injury. That is a massive blow to their defensive rotation, but Hassan will just park a double-decker bus in front of the goal. They are going to make this match as ugly as possible.

You can follow all the buildup and lineup announcements on the Sky Sports live coverage. The tension is building as kickoff approaches in Georgia.

Two legends on their final tour

This is the first time these two icons are meeting at this stage of a World Cup. Messi has seven goals in the tournament and has scored in eight straight matches. But he is playing at walking pace now, which creates a tactical dilemma for Scaloni.

When Argentina loses the ball, they are essentially playing with ten men because Messi cannot press. Egypt knows this and will try to exploit the space behind De Paul. Salah, even at this stage of his career, is still a threat on the counter.

Salah has spent years dealing with double-teams in the Premier League. He knows how to pull defenders out of position and create space for Ashour. If Tagliafico is left isolated against Salah, the Egyptian King will run him ragged.

How Egypt can pull off the heist of the century

To win this, Egypt has to survive the first 30 minutes. Argentina will want to start fast to quiet the doubters and ease Scaloni's blood pressure. If Egypt can frustrate them and keep the score at 0-0, the Argentine players will start to panic.

We saw how panicked Argentina got against Cape Verde. They started throwing bodies forward and left huge gaps in midfield. That is exactly what Hassan is hoping for today.

Look at the midfield battle: Mac Allister needs to keep his composure. He will be hounded by Ashour and Marwan Attia all afternoon. If Egypt can disrupt Argentina's rhythm, the supply line to Messi will be cut off.

If the game goes to extra time, Argentina's aging roster will struggle. Scaloni's scheduling complaints show that he knows his players are exhausted. Egypt has the physical stamina to run them into the ground.

Get ready for absolute chaos in Atlanta

This is the ultimate trap game for the defending champions. Argentina is looking past Egypt, already thinking about a potential quarterfinal against Switzerland or Colombia. That is a dangerous mindset when you are facing a team with nothing to lose.

I am calling it now: this is going to be a classic. Argentina will dominate the ball, but their defense will give up at least one massive chance to Salah. If Egypt can take that chance, we are going to see the biggest upset of the tournament.

Make sure to stay tuned to the Sky Sports team news feed for the official lineups. Grab your popcorn, because Atlanta is about to host a thriller.