Here come Scotland again though.

The forwards are knocking at the door, but Canada stand firm for now.

Scotland get another penalty advantage and chuck the ball wide as a result.

Chloe Rollie has Rhona Lloyd free outside her, but can't get the pass away and the chance is gone.

Bryan Easson is furious up in the stands - that pass simply had to go.

Scotland fall back on that penalty advantage and Helen Nelson kicks them right into the corner.

Big chance here.

Promising signs for Scotland, who string together seven phases and make their way steadily towards the Canada 22.

They have a penalty advantage in the bag too...

Philippa Tuttiett
Former Wales wing on BBC Two

Absolute power play from Canada. They've really been hustling Scotland and that's an early warning shot for them. Canada get into the 22, they convert - they're a really clinical team.

Eeek.

Canada slice Scotland open with some slick hands and clever offloading.

The ball goes to ground and Chloe Rollie just about drops on it to stop a certain try.

Scotland clear to touch, but it's only on the edge of their own 22.

Canada play with real tempo, fizzing the ball away from the back of rucks.

Scotland are keeping their structure really well though and stand firm in their first real defensive test.

Dare Scotland or Canada dream of getting their hands on this trophy?

Image source, Getty Images

Scotland just about navigate the first scrum of the game and quickly get the ball wide to Fran McGhie.

It's all a bit scrappy though and Canada force a handling error.

Scotland make a steady start, going through phases and then forcing a knock-on from Canada when they concede possession.

No sign of early nerves from Bryan Easson's side.

Deborah McCormack
Former Scotland lock on BBC Two

It's going to be a spicy one. If you look at this game on paper, you'll say it's unlikely Scotland are going to win.

I don't think it's out of reach for them. They've come into this game with a lot of momentum. There's ways that they can challenge Canada in this game.

Referee Aimee Barrett-Theron peeps her whistle and away we go.

Scotland are playing into a stiff breeze in this first half.

Flower of Scotland belts around Sandy Park and we're just about ready to go...

The players emerge into the late summer sun in the south-west of England.

Tyson Beukeboom leads out Canada on her record-breaking 81st cap, while Sarah Bonar is at the front of the Scotland queue on her 50th appearance.

Scotland head coach Bryan Easson tells BBC Sport: "Topping the group is important.

"The mindset has just been about us performing again. A lot of rest this week and talk around how we want to play"

Siwan Lillicrap
Former Wales captain on BBC Two

There's a reason why Canada are number two in the world.

I think they will likely be too strong for Scotland.

Canada come into today's game off the back of thumping wins against Fiji and Wales.

Fiji were swept aside 65-7 before they put 42 unanswered points past Wales.

Scotland will require a huge defensive effort today.

Image source, Getty Images

Nothing energises a tournament quite like a shock upset and Scotland believe they can provide the Women's Rugby World Cup with a bolt of electricity by toppling Canada today.

Second versus sixth in the world rankings does not immediately leap off the page as your typical David v Goliath affair, but the truth is the gap between these sides is far greater than those four ranking spots represent.

Alongside tournament favourites England, New Zealand and - when the mood captures them - France, Canada are operating at the top table of the women's game, but the underdogs believe they can bridge the gap

"We're going into this weekend like, 'why the hell not have a go at them?'," said prop Lisa Cockburn.

"We know Canada have a really good set-up and they've been playing really well. They're very skilled, they're very fast and they will throw the kitchen sink at us.

"We've done loads of analysis on them, we've got a really good game plan and the last few weeks our game plan has worked. It's been tailored to each game.

"So, I'm really optimistic and I think, 'why not cause a bit of upheaval in the World Cup, and maybe upset a few people?'"

Scotland lock Sarah Bonar makes her 50th appearance for Scotland today and she has been sent a special message by one of her heroes...