Saints and sinners: The weekend’s talking points

Sizzling Scarlets take top billing on a semi-final weekend to savour, Scotland reign at Twickenham and a hammer blow for the Lions as Billy Vunipola pulls out the tour

Injury to Billy Vunipola, forcing him out of the Lions tour, overshadows a sensational weekend of semi-final drama that includes an historic away win for Scarlets and last-gasp triumphs for Exeter and Wasps