A second tennis player, Renata Voráčová, has been detained in Australia after her visa was revoked.
It comes after world No 1 Novak Djokovic was held for failing to provide enough evidence that his vaccine waiver to play in the Australian Open was valid.
Djokovic's appeal against the decision will be heard on Monday but in the meantime Serbs at home and abroad have been rallying to his cause.
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