No, he was allowed in originally because the judge ruled that the process of refusing him a visa was unfair, in that he wasn't given enough time to respond when he first arrived.
Tennis Australia and the local state appeared to have agreed a visa for him, but as I understand it, the government didn’t.
Putting aside the extraordinary quirk of fate that he caught COVID just when he needed to, there were several issues with his behaviour.
He didn't isolate properly with the COVID that he had.
His visa application had errors in it
He had travelled elsewhere when his visa application said he hadn't.