Government lawyer Christopher Tran told the judge after the ruling that the minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs, Alex Hawke, "will consider whether to exercise a personal power of cancellation.''
That would mean Djokovic could again face deportation and could miss the Australian Open, which starts on Jan. 17.
Kelly said the threat of a further visa cancellation meant the "stakes have now risen rather than receded.''
"If this man is to be summarily removed upon a personal exercise of cancellation power, he cannot return to this country for three years, am I right about that?'' Kelly asked lawyers for Home Affairs Minister Karen Andrews, under whose authority Djokovic's visa was earlier canceled.