Relentless Saracens see off Exeter’s bold challenge to secure double

• Champions have all the elements in place to extend their domination• Positive signs for Exeter despite another Twickenham disappointmentWhen Pete Sampras was quietly accumulating seven Wimbledon titles in eight years there were those who yearned for more variety. It is an occupational hazard when champions settle into an extended trophy-winning groove but the smooth operators of English rugby are not bothered by such irrelevancies. Having become the first club to complete a Premiership and European double since 2004, Saracens have no intention of easing off now.To listen to Owen Farrell, in …