Wales have started making their changes.

Centre George North is replaced by Willis Halaholo, while prop Tomas Francis makes way for Leon Brown.

The Welsh pressure is relentless.

Another maul makes a mess of the Italian defence and the ball is worked out wide to the left, where Josh Adams is hauled into touch.

Surely a matter of time before Wales score their sixth try.

Now Ken Owens tries a grubber kick! Those two tries have gone to the hooker's head!

Nick Webb
BBC Radio Wales

The record winning margin is 53 points; we've got 37 minutes left.

Tom Shanklin
Former Wales international on BBC Radio Wales

I love seeing Wales score tries, it's something we've not seen really in the last 18 months and they're looking clinical.

I think we'll see quite a few players come on now, the game is won.

Sheedy will come on, Willis Halaholo, we'll rest some of the big boys for next week.

The second half starts with a Dan Biggar kick-off and Wales win the ball back immediately.

Onwards they march into the Italian half once again.

Robin McBryde
Former Wales forwards coach on S4C

I would give it another 10 minutes before making changes.

In the past, we've ended up playing the closing stages with 14 men because of injuries and cramp and so on.

So I wouldn't rush into bringing on the replacements.

Tom Shanklin
Former Wales international on BBC Radio Wales

We weren't expecting much really after Wayne Pivac said there would be "no razzle-dazzle"!

Wales have looked sharp, they've had all the possession, their discipline has been good and they've not allowed Italy into the game.

Gareth Griffiths
BBC Sport Wales

Wales can't officially win the tournament this weekend but they have moved a long way towards it now, especially if other results go their way over the next 24 hours.

Wayne Pivac's side top the table with 19 points and will hope now that England defeat France later on and Les Bleus do not pick up a bonus point, while Ireland beat Scotland tomorrow.

This would mean France could only match Wales' 19 points in their final two matches where they would need bonus-point victories.

Wales would themselves only need a solitary point from the game in Paris next Saturday to be crowned Six Nations champions.

Follow that? Hopefully so!

Fittingly, the first half ends with Italy knocking on and allowing Dan Biggar to kick the ball dead.

Wales could scarcely have wished for a better first half.

Four tries, bonus point secured. Easy.

As for Italy? That was embarrassing.

A little respite for Italy as they force a penalty with Josh Navidi penalised for holding on.

Paolo Garbisi kicks to touch inside the Welsh half.

Can Italy get anything out of this dismal first half for them?

Tom Shanklin
Former Wales international on BBC Radio Wales

Franco Smith will be absolutely fuming with 27-0.

Italy normally start big, they're normally competitive and it's normally around the 60-70 minute mark that they'll start to fold.

But they've folded from the off.

Italy's scrum is strong and Juan Ignacio clears with a kick up to the halfway line.

Wales clear and Italy look to counter, but they are turned over at their first ruck.

A couple of minutes left in the first half and Wales have possession again midway inside the Italian half.

Jamie Roberts is not wrong, is he?

And no sooner does that Italian attack break down, the home side concede another try.

Or do they? There will be a TMO check for a forward pass.

George North breaks and passes inside to Dan Biggar, who then passes back out wide to right wing Louis Rees-Zammit.

Rees-Zammit touches down but Biggar's pass is forward.

Garin Jenkins
Former Wales international on BBC Radio Wales

Wales won't have to waste must time practising driving line-outs for the French game if this continues.

The opportunities this afternoon have been immense.