Chris Ashton hat-trick helps Saracens breeze past hapless Oyonnax

• Pool 1: Saracens 55-13 Oyonnax• Eight-try Saracens go into Christmas unbeaten this seasonWe were dealing with certainties in Barnet. Everyone knew what was going to happen before it happened, and so it did. We had the expected rout of unmotivated French visitors; we had a hat-trick from Chris Ashton, which seemed more than familiar, albeit distantly so. We even knew the destiny of a prospective England coach. All seemed straight with the world in the week before Christmas.We cannot quite add the qualification of Saracens from Pool one of the Champions Cup to the list of certainties but an ei…