Cardiff Blues host high flying Saracens in round 4 of the European Champions Cup. Cardiff Blues have one win and two losses as they lie third in Pool 3, while Saracens remain unbeaten with three victories to sit atop the Pool. The sides met a week ago in round 3, with Saracens storming to a 51-25 home win. I'm Craig and will be taking you through this match with live updates and commentary.