After Australia dismissed Pakistan for 315 midway through day four with a lead of 223, David Warner came to the crease to open the batting for the hosts with one thing in mind. Runs. Quick runs and plenty of them.

If captain Steve Smith's instruction to Warner were to search for fast runs to give Australia a big lead before sending the visitors into bat once more, he delivered perfectly.

Fresh from blasting a 78-ball century in the first innings, Warner bludgeoned the Pakistani attack all over the SCG once again, smashing the fastest half-century ever recorded by an Australian Test cricketer, reaching the milestone in just 23 balls.

His 50 was also the second fastest in Test cricket history.

His half-century included seven fours and three sixes and he looked well on track to better Brendon McCullum's 54-ball Test history if the onslaught continued. However, he was clean bowled on 55 off 27 balls as he attempted to smack Wahab Riaz over the off-side.

At tea, Australia has reached 1-117 after 18 overs, with a lead of 343, with Usman Khawaja, who opened the batting in place of Matt Renshaw, on 30 and Steve Smith on 25

Fastest half-centuries in Test cricket:

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