This evening's game against the Sharks is still going ahead.
Two British and Irish Lions players are self-isolating on their tour of South Africa after being deemed close contacts to a member of management who tested positive.
As things stand, this evening's game against the Sharks in Johannesburg goes ahead at the new time of 7-o'clock.
Ulster's Iain Henderson skippers the tourists while Connacht's Bundee Aki starts in midfield.
Tadhg Furlong, Tadhg Beirne, Jack Conan and tour captain Conor Murray are among the replacements.
Meanwhile, South Africa's game against Georgia, that was due to take place on Friday, has been cancelled due to cases in both sides.
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