Ospreys 15-15 Saracens: Champions on the brink of exit

A Swansea stalemate has Saracens staring at a Champions Cup exit – and what is more, there are fears Billy Vunipola may have badly injured his arm which could rule him out of the Six Nations.Owen Farrell and Dan Biggar hit five penalties each in a drab, but tense affair, which means Saracens now have to rack up a big score at home to Northampton next week if they are to make the latter-stages as a best runner-up.The Ospreys could yet put a spanner in the works, but they have to win in Clermon...