Former Scotland captain Kelly Brown thinks Japan pose a threat to Samoa. What do you think?

An early handling error from Samoa gifts the turnover to the Japanese. Eddie Jones's side have not played for 10 days - they should be refreshed and ready to tear into the Samoans.

The bubbly crowd are well up for this. Almost 30,000 people countdown to kick-off - with Samoa having the honour. Here we go....

Image source, Getty Images

The camera pans to a familiar face in the Stadium MK crowd - it's only England centre Manu Tuilagi! The Leicester man is there to watch his brother Alesana, the Newcastle wing, who is lining up for Samoa.

Image source, Getty Images

Stadium MK is rammed as almost 30,000 punters welcome the teams out of the tunnel. Plenty of Japanese support in this part of Buckinghamshire, flags, bandanas, body paint.... Time for the anthems...

Earlier (see 14:18 entry) we told you about a couple of Japanese fans getting painted up for the occasion. Hope it washes off easily. So we want to hear your stories of what lengths you have gone to to show off your colours. Tweet using #bbcrugby or text 81111. Feel free to sound off about whatever you want (keep it rugby).

If you have caught the Rugby World Cup bug but are still a little unsure about the rules, then do not panic.

Confused about the competitive scrum? Does a ruck send your brain into a maul? You're not alone. The technical part of the game can sometimes be hard to understand even for experienced players, let alone new rugby fans, which is why we've come up with an all singing iWonder guide. 

Click here to learn what role players play in the scrum and how the ruck works, among other things. It's really good.  

Image source, BBC Sport

Phil Shepka
BBC Sport at Stadium mk

"Judging by some of the scenes outside today, it's no wonder Japan is beginning to gain a reputation as 'The Land of the Rising Scrum'. These supporters have been the talk of Stadium MK today, posing for pictures with all and sundry.

"I wonder if they have a 'Wet Paint' sign to warn any unsuspecting passers by..."

Image source, Phil Shepka

Hungry for some scrum-ptious stuff today? Excellent. You're in the right place. Samoa v Japan is the hors d'oeuvre on a mouthwatering menu of tasty World Cup action.

After this game we have the small matter of Scotland v South Africa and then England v Australia. No need for a pud. Monster.

Lock Kane Thompson is in the Samoa side after completing a two-match ban.

Thompson's return is one of five changes from their 46-6 loss to South Africa, with fly-half Tusi Pisi and centre Johnny Leota also starting.

Image source, .

Japan have made five changes after their 45-10 defeat by Scotland.

Kensuke Hatakeyama replaces Hiroshi Yamashita at tight-head prop, while lock Hitoshi Ono wins his 96th cap.

Image source, .

Phil Shepka
BBC Sport at Stadium mk

"While Japan came to Stadium MK on their team coach, the Samoa team were actually staying in the ground's hotel last night, making their journey to the players' entrance a grand total of around 20 metres.

"Will that extra night of inspecting the pitch pay dividends?"

Image source, Phil Shepka

That Japan victory against South Africa in their opening game sent shockwaves across the world of sport. And it swept Pool B wide open. Both Samoa and Japan need a win as they push for a top-two finish to move into the quarter-finals.

Image source, .

Why all the boxing analogies? Well, Japan coach Eddie Jones started it. Here's what the Aussie-born coach had to say about the game...

"We are playing one of the biggest teams and in every position we are giving height and weight away," says Jones.

"We need to move the ball around. They want to wrestle and we don't want to wrestle. They want to put us up against the ropes, we want to be coming jib-and-jab style, moving. It's as simple as that. We want to win points with jabs, Samoa want to win with knock-outs.

"We need to make sure we stay in it for the whole 80 minutes. There's not going to be much in it." 

Samoa v Japan at the Rugby World Cup. Hardly a heavyweight clash, I must admit. More like a welterweight bout. Although, as Japan coach Eddie Jones confessed, his team are couple of weight divisions below the Pacific Islanders....

But today, both Samoa and Japan in the same ring with their eyes on the same prize. The quarter-finals. Defeat in Milton Keynes would see their chances of progressing from Pool B all but go down the drain.

Image source, Getty Images

*Adopts voice of legendary boxing announcer Michael Buffer* 

Ladies and gentleman from across the world. Brought to you by governing body the International Rugby Board, welcome to day 16 of the 2015 World Cup. 

In the blue corner, weighing in with one win and one defeat from their two matches, it is the three-time quarter-finalists... Samoa.

In the red corner, aiming to reach the knockout stage for the first time, with an identical record of one win and one defeat, welcome to.... Japan. 

Rugby fans are you ready? L-l-l-l-let's get ready to rumbl-l-l-l-le!