Ospreys take on Toulouse, while Scarlets are at home to Exeter.
KO for both games is at 13:35
More top news
The Welsh Conservative leader and the Welsh Secretary will today address their party's UK conference in Manchester.
A five-day celebration of LGBT short films will begin this evening in Cardiff.
People who smoke or are overweight may have to go on stop-smoking or weight loss programmes before having some routine operations.