A look ahead to the three matches still going ahead on Saturday in the second round of the Champions Cup pool stage.
A round-up of the rest of Saturday's European action, which included wins for reigning champions Toulouse and Leinster.
Dai Young has pleaded for government intervention to assist the Cardiff personnel facing a second period of quarantine after returning from South Africa.
Cardiff have begun repatriating their six remaining squad and staff members from South Africa, but they face a second 10-day period of isolation in the UK.
We look ahead to Saturday's five Heineken Champions Cup games as Europe's top competition kicks off for another year.
Cardiff Blues academy manager Gruff Rees hopes his young team's surreal build-up to facing European champions Toulouse might inspire his side to a surprise result.
Cardiff Rugby have left South Africa and are due to arrive back in the UK via Ireland, after being stranded since the emergence of the Omicron Covid-19 variant.
European Professional Club Rugby has relaxed player registration rules in response to the plight of four sides who found themselves stranded in South Africa.
Dai Young said Cardiff will "do everything in our power" to play their Heineken Champions Cup games against Toulouse and Harlequins.
Cardiff are set to return to the UK on Thursday having been stranded in South Africa after the cancellation of their matches in the United Rugby Championship.
Cardiff and Munster are to remain in Cape Town after both clubs returned positive coronavirus tests.
Cardiff and the Scarlets say they are struggling to fly their teams back from South Africa despite securing a charter plane.
Wales look set to end the autumn with more injuries as Wayne Pivac waits on assessments to four players ahead facing Australia.
We look ahead to Saturday's clash at the Principality Stadium as Wales target a fifth successive home win over South Africa in Cardiff.
Wales look set to have Liam Williams and Ellis Jenkins in the selection mix for Saturday's Autumn Nations Series clash against South Africa.
Taine Basham, Owen Lane, Johnny Williams and Gareth Anscombe will start for Wales vs New Zealand, while Liam Williams is ruled out.
It was a bumper Saturday of action in the United Rugby Championship, with six games taking place throughout the day.
Wales full-back Hallam Amos is to retire from rugby at the end of the season to focus on his medical career.
Uncapped Exeter forward Christ Tshiunza has won a surprise Wales call-up, with Wasps' Thomas Young included ahead of his move to Cardiff.
Stormers and Glasgow draw while Leinster hammer Zebre and Glasgow edge Lions in Saturday's United Rugby Championship.
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