The controversy over Novak Djokovic's Australian visa application has been "damaging on all fronts", the men's professional tennis tour has said.
The ATP also called for more clarity of the rules to enter Australia and urged players to get vaccinated.
Djokovic left an immigration detention hotel on Monday after his visa cancellation was overturned in court.
But Australia's immigration minister still has powers to re-cancel the visa and deport the unvaccinated player.
"Complications in recent days related to player entry into Australia have... highlighted the need for clearer understanding, communication and application of the rules," said an ATP statement.