The attacking left-hander has attained the top ranking for the first time, leapfrogging AB de Villiers and Virat Kohli.
David Warner and Travis Head feature highest ODI stand for Australia. Babar, Sharjeel offer some resistance.
Having already conceded the five-match ODI series, Pakistan will want to end tour with victory in dead rubber.
Australia secured the one-day series against Pakistan with a commanding 86-run win at Sydney Cricket Ground on Sunday, taking a 3-1 lead in the five match series.
Australia have taken a 2-1 lead in the five-match ODI series against Pakistan.
Skipper racks up another hundred while debutant makes 82 in comfortable seven-wicket win, takes 2-1 lead.
The five-match ODI series is currently levelled 1-1. Australia aim to bounce back.
Mohammad Hafeez led Pakistan to its first victory on the tour of Australia with a six-wicket win in the second ODI of the five-match series on Sunday.
Australia thump Pakistan by 92 runs in 1st ODI at Brisbane, take 1-0 lead in five match series.
Australia declare playing XI for Brisbane ODI, Pakistan look to defy history in new format.
