12.20pmThat's lunch on day four in Perth. Australia lost Warner on the fourth morning, but Labuschagne backed up his first-innings double-hundred with a ton in the second to lift the lead to nearly 500. Here is the man of the moment: "Obviously, had a bit of luck with the bouncer and always nice," Labuschagne says. "Very proud. I played some rogue shots and tried to compose myself. Great spell from Joseph - he was hitting 145kph. There's a reason I was in a hurry." Gnasher will be back with you after the break.

Pari: "Labuschagne and Smith makes it look like they bat on a different pitch."

Tulett: "Cameron Green, playing in his first test at his home ground, won't even get to bat. That's cruel."

The field has been whisked in, with Labuschagne on 99

Labuschange needs five to get to another century. Three minutes to go for lunch.

Graham: "Wonder how much Smith has insured his "hands" for, hopefully he takes better care of them this time and doesn't lose them again"

Chase replaces Holder. Round the stumps

jason: "I'm loving this reworked cover drive of smith's. So much more power generated with his hands through the ball."

VijayPattar: "Looking Marnus bat is like watching smith bat in 2016-17 ashes, he's just a younger version of smith in terms of 'appetite for runs'"

Will: "Labuchagne has voracious appetite for runs and windies keep feeding him!"