Australia are responding well to Pakistan's huge 48 in the Rawalpindi test, batting on the last afternoon of day four, Ajit's score having crossed 400 for 4.
On day four, Usman Khawaja and Marnus Labushan, two of Australia's best batsmen, made history by scoring at least 50 runs between the top four batsmen along with the victims of the Nervous Nineties.
Marnas Labushan and Steven Smith, two undefeated batters, started the fourth day game 281 from two after a midday break after the first session was washed out by rain.
Labushan and Smith took the pair of centuries the day before, Smith collecting the 34th fifty of his Test career on 112 balls. Labushan was out at 10 races for the century and Australia set a record.
For the first time, two of Australia's best batsmen were out in the Nervous Nineties, with the first four batsmen averaging a record of at least 50 runs.
Usman Khawaja (96) and Marnus Labushan (90) cut themselves in the jittery nineties, while David Warner (8) and Steven Smith (69*) hit fifty.
He also holds the record for the first 4 batsmen to score 50 or more runs, the second time Australian batsmen on the subcontinent have scored at least 50 runs for the top 4 batsmen.
Matthew Hayden (63), Simon Katich (64), Ricky Ponting (8) and Michael Hussey (53) were the top four batsmen in Australia's record 50 runs against India in the 2006 Delhi Test against India.