article_snippet: Jamie Roberts (right) in action for Wales' during the Six Nations match with France at the Stade de France .
article_snippet: Jonathan Davies runs with the ball for Wales as Jonathan Davies side beat France 20-13 in their last game .
article_snippet: At the start of the championship, Joe said the Wales- England game was going to be the standard-bearer.
article_snippet: Wales, however, have one of the best defensive back-threes in the world and
article_snippet: At 6ft 9in and 6ft 11in, Luke Charteris of Wales and Devin Toner of Ireland are two of the tallest players in the competition.
article_snippet: Luke Charteris of Wales and Devin Toner of Ireland are both extremely difficult to beat on Luke Charteris of Wales and Devin Toner of Ireland own line-out throw, while Luke Charteris of Wales and Devin Toner of Ireland can be equally disruptive towards Luke Charteris of Wales and Devin Toner of Ireland opponents'.
article_snippet: Luke Charteris of Wales and Devin Toner of Ireland long limbs are used to try and steal ball, although that can leave the defending side open to attack from the driving maul, where both Wales and Ireland are particularly effective.
article_snippet: Welsh defence coach Shaun Edwards claims Welsh defence coach Shaun Edwards players are the best in the world at contesting the post-tackle area.