Ospreys take on Toulouse, while Scarlets are at home to Exeter.
KO for both games is at 13:35
More top news
Welsh actor Michael Sheen has been unveiled as President of the Wales Council for Voluntary Action.
The Blue Light Programme, created by Mind Cymru, will help staff with mental health issues to better handle situations they face in the job.
A cold and frosty start to the day with showers later. Feeling chilly again!