Warner opens up with 164 as Australia pummel Pakistan

The 37-year-old only needed 125 balls to bring up his 26th Test ton, and he continued to pile on the pain after that in an innings that featured 16 fours and four sixes.

The massive knock resulted in Warner (8631 runs) leapfrogging both Matthew Hayden and Michael Clarke into fifth spot on Australia's all-time Test runs list.

Warner has already announced he will retire at the end of the current three-Test series, which also takes in clashes in Melbourne and Sydney.

But given Warner had only posted one Test century since January 2020, there were huge question marks about whether his form warranted him holding his spot until his nominated home finale at the SCG.

The veteran opener emphatically put those doubts to bed on Thursday, and his emotions flowed after reaching his century.

Warner unleashed his trademark leap in the air before holding his glove to his mouth and then pointing it towards the venue's media centre in a powerful response to the criticism he has copped.

"It's one of those things, there's going to be criticism but you've got to take that," Warner told Fox Cricket when asked about his unique celebration. 

"There's no better way to silence them than by putting runs on the board. It feels great."

Usman Khawaja (41), Marnus Labuschagne (16), Steve Smith (31) and Travis Head (40) were unable to go on with the job.

Khawaja and Warner entered the match battling a wave of controversy for very different reasons.

Flying high: David Warner leaps with joy after completing his long-awaited 26th Test century. (Richard Wainwright/AAP PHOTOS)

Warner's position in the side became a subject of public debate following an explosive column from former Australian pace ace Mitchell Johnson. 

Johnson declared Warner didn't deserve a hero's farewell given his poor recent form and involvement in the 2018 Sandpapergate scandal.

But Warner, who had also been labelled a walking wicket by his former opening partner Ed Cowan, fired back in perfect fashion, taking just 41 balls to reach his half-century, before powering on to reach his ton.

Khawaja hit the headlines this week for inscribing "All lives are equal" and "Freedom is a human right" on his cricket shoes in response to the growing humanitarian crisis in Palestine.

His hopes of wearing the shoes for the Test were scuppered by International Cricket Council rules, but Khawaja - who donned a black armband at Optus Stadium - responded with a heartfelt explanation of his stance.

Pakistan paceman Shaheen Afridi celebrates the wicket of Usman Khawaja at Optus Stadium. (Richard Wainwright/AAP PHOTOS)

Khawaja's innings looked over when he top-edged one high into the sky when he was on 21.

But Abdullah Shafique, running back with the flight, had the sun in his eyes and was left embarrassed as the ball went through his hands and rebounded off his chest for a boundary. 

Khawaja's knock was finally ended after lunch when he edged a fuller Shaheen Afridi delivery behind.

Labuschange was then trapped lbw by Faheem Ashraf (1-65).

Warner was dropped on 104 when Khurram Shahzad failed to hang on to a catch above his head at mid-on.

But his luck ran out late in the day when his hook shot off Aamir Jamal (2-63) came off the toe of his bat and found Imam ul-Haq in the deep.

Hometown hero Mitch Marsh (15no) and Alex Carey (14no) will resume at the crease on Friday.