Saracens’ Billy Vunipola ‘a force of nature’ in European Champions Cup

• No8 helps destroy Munster 33-10 at Allianz Park• Director of rugby Mark McCall hails ‘phenomenal’ display• Richard Wigglesworth ‘magnificent’; Chris Ashton ‘outstanding’Mark McCall hailed a “phenomenal” performance by the England No8 Billy Vunipola after the twice European champions Munster were destroyed 33-10 at Allianz Park. Vunipola, who looks set to replace the injured Ben Morgan in England’s starting lineup for the Six Nations opener against Wales, in Cardiff, next month, produced an inspired display.“Billy was phenomenal today,” said Saracens’ rugby director, of the man of the match. …