Use play icon at top of the page to watch live coverage from the Lusail Iconic Stadium in Lusail, Qatar
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
FT: Poland 0-2 Argentina
Alan Shearer
Former England striker on BBC One
It was unbelievable. It got a lot better and Argentina were better in the second half, they moved the ball a lot quicker. Got the victory they deserve. They could and should have scored a few more. But Poland have got their keeper Szczesny to thank for getting them through to the next round because he was magnificent tonight.
Tweet using #bbcfootball or Text 81111 (UK standard rates apply)
Aleks: Mexico may have showed up and turned up tonight, but don't forget they would've lost to Poland in face to face meeting were it not for Ochoa's heroics, and weren't any better against Argentina than Poland is today
FT: Saudi Arabia 1-2 Mexico
Ashley Williams
Former Wales captain on BBC Two
Madness. That was such a good game of football regardless of who went through.
Tweet using #bbcfootball or Text 81111 (UK standard rates apply)
Chris: A shame Poland get rewarded for that. Can't see anything but an easy France win in the next round.
FT: Saudi Arabia 1-2 Mexico
The last World Cup last 16 without Mexico was all the way back in 1990. End of an era.
How crucial Wojciech Szczesny's first-half penalty save from Lionel Messi proved.
Poland squeeze through as Mexico are left sick as the proverbial parrot.
Image source, BBC SportFT: Saudi Arabia 1-2 Mexico
One Mexican goal would have taken them through at the end - on goals scored.
So that late Saudi goal hadn't really changed anything.
FT: Poland 0-2 Argentina
Andy Cryer
BBC Sport in Qatar
Wow. The Poland players are now celebrating on the pitch and the red and white flags are waving.
I'm not sure they can quite believe they have made it.
FT: Poland 0-2 Argentina
The Poland players and fans are happy now! Their display here didn't produce a single thing to cheer about, but all's well that ends well, right? Right?!
Maybe the Polish fans at home should calm down first before they try to answer that.
Saudi Arabia 1-2 Mexico
It's all over.
Poland are through.
Mexico are out.
Saudi Arabia are out.
Saudi Arabia 1-2 Mexico
We're past the seven minutes. Raul Jimenez clatters the keeper and heads wide anyway.
Saudi Arabia 1-2 Mexico
Mexico come forward and have a free-kick. Surely too late. Another Saudi booking.
Saudi Arabia 1-2 Mexico
Mexico have a minute left and need to score.
Saudi Arabia 1-2 Mexico
Danny Gabbidon
Former Wales defender on BBC Two
I can't believe what I'm seeing. Saudi Arabia looked dead and buried. They'd offered nothing. That is a hammer blow for Mexico.
Salem Al Dawsari (90+5 mins)
Mexico are going out.
They have to take risks and leave so many spaces at the back. Salem Al Dawsari takes advantage with a one-two in the box with Hattan Bahbri and calm finish.
FT: Poland 0-2 Argentina
Andy Cryer
BBC Sport in Qatar
It's over here and it's fair to say the Polish players and fans don't look as though they have a clue if they are through or not.
They are - unless Mexico score in injury time.
The phones are out.
Saudi Arabia 0-2 Mexico
Saudi Arabia are on the attack. Surely not!
FT: Poland 0-2 Argentina
Argentina dominated from this from start to finish. Poland didn't even try to win it.
They are through as it stands, and only events elsewhere can change that...
Saudi Arabia 0-2 Mexico
Saudi Arabia have received 13 yellow cards in the group stage, a new record for a team in a single group stage in World Cup history.
All about yellow cards tonight.
Saudi Arabia 0-2 Mexico
It's all down to Mexico now. They need to score. Forget yellow cards, forget Argentina.