Unrealised potential of players like Sam Davis

Gareth Rhys Owen and Lauren Salter are joined by Scrum V commentator Cennydd Davies and former Wales wing Alex Cuthbert at the Vale to discuss Steve Tandy's team selection for Sunday's Six Nations match with France. Wales have brought in Scarlets centre Joe Hawkins and Leicester number eight Olly Cracknell as part of four personnel changes to the team thrashed by England.