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Saudi Arabia would progress to the last 16 with a win
A Mexico win would see them through if Poland beat Argentina
If that games finishes in a draw or Argentina win, Mexico would need to win by at least four goals
Poland 0-1 Argentina
Danny Murphy
Former England midfielder on BBC One
It's going to be difficult for Poland to create an urgency and intensity in this heat. It's a warm evening here in Qatar.
Poland 0-1 Argentina
Saying that, Argentina are waltzing through their packed defence, never mind a less well-manned one.
Poland 0-1 Argentina
Still no sign of Poland opening up to attack Argentina. It is so dangerous.
Poland 0-1 Argentina
Danny Murphy
Former England midfielder on BBC One
Great vision from Messi again. He just sees all the pictures.
Image source, Getty ImagesPoland 0-1 Argentina
Argentina continue to batter the Poles.
Nicolas Tagliafico is found in space on the left and his low cross picks out Alexis Mac Allister for a low shot that he blasts straight at Wojciech Szczesny.
Guess who picked out Tagliafico with a glorious pass? I don't even need to type it. You know.
Saudi Arabia 0-2 Mexico
Mexico have a corner. Henry Martin gets his head to it but not enough power.
Another corner though.
Saudi Arabia 0-2 Mexico
Saudi Arabia's heatmap tells a story.
They have offered nothing going forward.
Image source, OptaSaudi Arabia 0-2 Mexico
Saudi Arabia need to score three goals. I don't see that happening at all.
Poland 0-1 Argentina
I pity the Poland fans going through this. It might be one to hide behind the settee and come out praying for good news when it's all over.
Saudi Arabia 0-2 Mexico
Danny Gabbidon
Former Wales defender on BBC Two
Saudi Arabia are sloppy, giving the ball away in a dangerous area, they almost get punished again.
They look shell shocked.
Image source, Getty ImagesSaudi Arabia 0-2 Mexico
Mexico just need one goal to overtake Poland on goals scored and go through. As things stand right now. Everything is subject to change.
Poland 0-1 Argentina
Argentina's first change sees Marcos Acuna replaces by Nicolás Tagliafico. Angel di Maria is also off, with Leandro Paredes on.
Saudi Arabia 0-2 Mexico
Mexico have the ball in the net again but this one is disallowed.
Hirving Lozano plays the ball through to Henry Martin. He controls it and Lozano takes back over and steers the ball into the bottom corner.
Sadly Martin was a few inches offside.
Poland 0-1 Argentina
Andy Cryer
BBC Sport in Qatar
It is some noise now at Stadium 974.
But the real drama at the moment is whether Poland can hang onto second place.
Argentina look in the mood for more goals - and that is very bad news for Poland.
Poland 0-1 Argentina
It feels like the picture is altering by the minute here. Twists and turns.
You have to think we've got more drama in store yet.
Poland 0-1 Argentina
The goal that has Argentina top right now...
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Wayne: No excuse at all for a team of Poland’s quality to be playing this negatively from the start. Getting what they deserve
Saudi Arabia 0-2 Mexico
Shamoon Hafez
BBC Sport at Lusail Stadium
What a stunning free-kick from Luis Chavez, pin point and now it's on. NOW it's on.
Image source, Getty ImagesSaudi Arabia 0-2 Mexico
Guy Mowbray
Match of the Day commentator on BBC Two
A thing of beauty.
Mexico, Mexico, where have you been?
Poland 0-1 Argentina
Today's shot map. Argentina in purple, Poland in black.
One-way traffic.
Image source, Opta