article_snippet: Ireland are on course for a Grand Slam and
article_snippet: This is quite a formidable Ireland team and we are going to have to be at we best to come close to quite a formidable Ireland team.'
article_snippet: Ireland's Iain Henderson (centre) braves the challenges of Billy Vunipola (right) and Richard Wigglesworth .
article_snippet: In Conor Murray and Jonathan Sexton, Ireland have the world's in-form kicking half-back combination.
article_snippet: Leigh Halfpenny is a master at limiting the space to kick into.
article_snippet: How well Ireland anticipate that — perhaps using Sexton as a looping runner, if the wingers drop back — will be highly significant.
article_snippet: However, his players will face his players toughest breakdown battle yet against Ireland, who won 23 turnovers to nine against England in round three.
article_snippet: Warren Gatland's game-plan relies heavily on quick recycled ball and Ireland will look to slow that down to limit the risk from the likes of Jamie Roberts and George North.
article_snippet: Getting on the right side of referee Wayne Barnes will be key, because Halfpenny and Sexton are two of the world's leading goal-kickers.