Sydney: Novak Djokovic has withdrawn from the ATP Cup in Australia ahead of the first Grand Slam tournament of the season, organizers said Wednesday.
No reason was given but the top-ranked Serb has declined to comment on his vaccination status in recent months and Australia's strict regulations require all players, officials and fans to be fully vaccinated against COVID-19.
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ATP Cup organizers disclosed Djokovic's withdrawal in a roster update that included France replacing Austria in the 16-country event following the withdrawals of Dominic Thiem and Dennis Novak.
Dusan Lajovic will replace Djokovic for Serbia.