England qualify for the last eight as Pool D winners thanks to Japan's win
Japan run in three tries before 14-man Samoa staged late fightback
Samoa's Ben Lam sent off for head-on-head tackle early in second half
Japan's Shota Horie returns after similar incident in first half
Japan v Argentina on 8 October for place in last eight as Pool D runners-up
Samoa play England in final fixture
Japan 0-0 Samoa
Hugo MacNeill
Ex-Ireland full-back on BBC Sports 5 Extra
It has been all Samoa so far, now Japan have won a penalty they have taken maximum advantage by kicking it down field.
Image source, Getty ImagesJapan 0-0 Samoa
A very early switch for Samoa as Taleni Seu limps off, replaced by late addition Brian Alainuuese.
Japan 0-0 Samoa
Samoa win a line-out and then develop a driving maul which bulldozes its way over the 22.
But Japan recover and even manage to pinch the ball back and clear.
That's how this game is emerging. Samoa attacking, Japan defending well.
Japan 0-0 Samoa
Boom! D'Angelo Leuila smashes the penalty and the line is perfect, but the ball drops about a yard short.
Image source, ReutersJapan 0-0 Samoa
Straight away Samoa win an early penalty in midfield and wow, they're going to kick at goal.
It's a very long way away.
Japan 0-0 Samoa
And we're off. Samoa get us started.
Japan v Samoa (20:00 BST)
Samoa's players bring the noise with an enthralling display. The Japanese team stare them down.
We're ready for some rugby now.
Japan v Samoa (20:00 BST)
Anthems done, it's time for Samoa's Siva Tau.
Image source, Getty ImagesJapan v Samoa (20:00 BST)
Image source, Getty ImagesThese two have met very recently and oh my it was close!
Two months ago Samoa managed a 24-22 win away in Sapporo.
Just the two points in it on that day. You can't split 'em!
Japan v Samoa (20:00 BST)
Image source, Reuters
Image source, Getty ImagesJapan v Samoa (20:00 BST)
It's squeaky bum time in the group stages of the Rugby World Cup.
Lose and it's very difficult to see a way of making it to the knockouts.
Image source, BBC SportJapan v Samoa (20:00 BST)
BBC Radio 5 Sports Extra
You're being treated tonight. We've also got live radio coverage of this one on BBC Radio 5 Sports Extra.
And you can get listening by clicking the play icon at the top of this page.
Enjoy!
Japan v Samoa (20:00 BST)
Image source, Getty ImagesJapan reached the last eight for the first time four years ago as hosts, winning all four group games including victories over Ireland and Scotland.
"Once they understand how we want to go about things, it really comes down to attitude and caring and working for each other and this group does work very, very hard for each other," said Japan defence coach John Mitchell.
"But we're at a situation at this tournament where they are actually going to have to fight and care for each other more than any other day - it's not just like any other Test match.
"It's really important on both sides of the ball that we really do show our heart and how much it means to us, and how much this tournament is an opportunity to present a message to the next generation."
Japan v Samoa (20:00 BST)
Image source, Getty ImagesIf either Japan or Samoa win both of their remaining matches with bonus points, they will go through to the last eight. Anything less opens the door for Argentina.
Samoa prop Paul Alo-Emile said this week: "This game is definitely very, very important. So far we are not thinking about any other game so I would say this is the most important game.
"We are not focusing on England or anything past England. We are ready for Japan. This is one game we really want to win."
Samoa have only reached the World Cup quarter-finals once, on debut in 1995 when they beat Wales in the groups.
Japan v Samoa (20:00 BST)
Image source, Getty ImagesLet's go through it again. These two, along with Argentina, are likely competing for second place in Pool D.
Samoa have not reached the knockouts for 28 years, while Japan are seeking a second successive last-eight place.
"It's exciting how wide open the pool is with all the results," Samoa assistant coach Andrew Goodman said.
"Do or die is not the terminology we have used. We have talked about a performance we can be proud of."
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As always you can have your say on all things Rugby World Cup tonight.
I'm mainly hoping you guys will correct/validate my last few entries about those line-up switches.
Some late, late changes, a live-texter's worst nightmare!
The best way to get in touch is on X/Twitter, by posting/tweeting using #bbcrugby.
Japan v Samoa (20:00 BST)
If I've been following along correctly, I reckon the two line-ups should now look like this:
Japan XV: Lemeki; Matsushima, Riley, Nakamura, Naikabula; Matsuda, Saito; Inagaki, Horie, Gu, Cornelsen, Fakatava, Leitch, Labuschagne, Himeno.
Replacements: Sakate, Millar, Ai Valu, Dearns, Shimokawa, Fukuda, Lee, Osada.
Samoa XV:Paia'aua; Fidow, Manu, Leuila, Ben Lam; Leali'ifano, Taumateine; James Lay, Seilala Lam, Alo-Emile, Luatua, McFarland, Seu, Lee, Taufua.
Replacements: Malolo, Jordan Lay, Alaalatoa, Alainuuese, Motuga, Matavao, Fomai, Toala.
Japan v Samoa (20:00 BST)
Japan head coach Jamie Joseph also makes a late switch as scrum-half Yutaka Nagare drops out, with Naoto Saito starting in the number nine jersey and Kenta Fukuda coming on to the bench.
Image source, Getty ImagesJapan v Samoa (20:00 BST)
Samoa have made a very late switch to their line-up as captain and second-rower Chris Vui misses out.
In comes Steven Luatua, promoted from the bench, while Brian Alainuuese joins the replacements.
Image source, Getty ImagesJapan v Samoa (20:00 BST)
Image source, Getty ImagesIt's a pleasure as always to have you with us.
It's also worth noting that there's plenty of interest for England supporters watching on.
Should Samoa fail to win tonight, Steve Borthwick's side will be guaranteed a spot in the quarter-finals.
England and Samoa play each other next week in their final pool match. Japan will face Argentina.