David Warner continues to re-write the records books, this time blasting the second fastest ever half-century in the third Test against Pakistan.

Warner smashed three sixes and seven fours in a 23-ball half-century on Friday, falling two balls shy of beating Misbah-ul-Huq's record set in 2014-15.

His rapid fire innings was on track to threaten Brendon McCullum's record of fastest century, however the 30-year-old was eventually bowled by Wahab Riaz for 55.

Warner's latest achievement comes after becoming just the fifth batsman in Test history to hit a century before lunch in his first innings knock at the SCG.

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His ball-by-ball scoring went as follows: 4....11..66441.1.4444.6.

Australia have increased their lead to over 300 with nine wickets in hand.

- AAP