South Africa defeated Australia by 84 runs in the second ODI on Friday to gain an unassailable lead in the three-match series.

Lungi Ngidi's second ODI five-wicket haul, ably supported by half-centuries from Matthew Breetzke and Tristan Stubbs, meant that South Africa sealed the 2-0 ODI series victory over Australia, with a game in hand in Mackay.

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Australia are 155/6 (Target 297) vs South Africa after 30-overs in the first of the three match ODI series at the Cazaly's Stadium in Cairns on Tuesday.

South Africa have been forced into a late injury change to their starting 15 for the second Rugby Championship test against Australia in Cape Town on Saturday with Aphelele Fassi drafted in to replace Willie le Roux at fullback.

After beating South Africa in the first ODI match, South Africa took an early 1-0 lead in the series. Australia, meanwhile, are looking to bounce back to remain alive in the series. The 2nd match of the ODI series is set to be played at the Great Barrier Reef Arena in Mackay,