Alex Carey’s maiden Test century helped Australia to a monster lead of 386 over South Africa on day three of the Boxing Day Test at the MCG, as Australia amassed 8-575 before declaring. 

With Mitchell Starc and first-innings hero Cameron Green both battling injuries to their bowling hands, Australia needed a big lead to defend and then made a hot start when Pat Cummins removed South Africa captain Dean Elgar with his third ball.

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