Ireland skipper Jonathan Sexton has thrown down the gauntlet ahead of the Six Nations opener by admitting Wales' players "aren't mad about us - and they're not shy of making it known."
Dan Biggar and his team head to Dublin for the start of the defence of their title in just nine days' time and already, it seems, the mind games have begun.
It was former Wales boss Warren Gatland who first shocked the rugby world by revealing his players disliked their Irish opponents more than any other team.
