Aaron Finch is willing to demote himself down the order if it will help Australia's World Cup defence.

Finch has opened in 98 of his 100 ODI innings, including a successful partnership with David Warner at the top of the order at the 2015 World Cup.

Aaron Finch is happy to bat in whatever position best helps the team. Credit:AP

Finch and Usman Khawaja are expected to open throughout the five-match series against Pakistan that starts in Sharjah on Friday, having recently produced stands of zero, three, 76, 83 and 193 in India.

Australia's opening combination for this year's tournament in England is far more uncertain.