Australia will begin its first home One Day International series since 2020 on Sunday as they take on Zimbabwe in Townsville.

Straight after that three-match series, they will play another against New Zealand in Cairns.

With a World Cup just next year, these matches have increased significance as each side looks to hit top form.

Here are all the big talking points

2. Who will stand up in the middle order?

Australia's Steven Smith plays a shot (R) watched on by New Zealand's Luke Ronchi (R) during the Pool A 2015 Cricket World Cup match between New Zealand and Australia at Eden Park in Auckland on February 28, 2015. MICHAEL BRADLEY/AFP/Getty Images

Even beyond Finch, Australia's best batting lineup is far from certain. With Mitch Marsh back from injury, they potentially have up to eight players vying for places three to eight in the order.

Smith and Labuschagne are the incumbents at three and four, but while Smith made a good fifty before getting injured in the recent Sri Lanka series, Labuschagne fell between 18 and 31 in all five games.

Questions have also been asked about whether, considering Smith's strike rate of just 88 and Labuschagne's of only 85, there is a place in the team for both of them. With many countries starting to bat more aggressively throughout the innings in One-Day cricket, many have suggested someone more attacking like Marsh or Head take Labuschagne's place.

Traditionally, Australia has preferred to have one or two "glue" type players so as to avoid collapses. If they aren't scoring enough, however, this philosophy may have to be adapted.

In the short-term, it's likely that Marsh will bat four against Zimbabwe and Labuschagne get pushed to five, in order to add some variety.

With Carey as the keeper, that just leaves one genuine batting position to go to either Maxwell or Stoinis. With Maxwell undroppable, Australia may have to be more unconventional if they feel they need the added firepower of Stoinis.

With his bowling abilities, many have suggested they play him in place of Hazlewood and prioritise the extra batting strength.

These six games in the top end are the perfect opportunity for all of these players to cement their places in the side and for the selectors to work out the best structure of the team going forward.