Rugby's World Sevens Series is the latest sporting event to be rescheduled due to the coronavirus outbreak.
The Hong Kong and Singapore rounds have now been moved from April to October.
"The health and safety of our players, fans and everyone working on the event is always our highest priority," World Rugby said in a statement.
"This prudent decision has been taken in order to help protect the global rugby community and the wider public and was taken based on the World Health Organisation and relevant public authority travel and health guidelines.
"The decision is fully supported by stakeholders, including unions and commercial partners. Hong Kong and Singapore will host HSBC World Rugby Sevens Series 2021 tournaments as per usual in April".
"Fans who have purchased tickets for Singapore and Hong Kong via official channels are advised that their tickets will be honoured for the rescheduled events and a full refund will be provided in the event fans are unable to attend the rescheduled events."
April's Chinese Formula One Grand Prix has also been postponed.
But organisers of the Tokyo Olympics insist they're not considering putting off or cancelling this summer's Games.
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