Let's face it, Johnny Sexton's hamstrings are a big problem for Irish head coach Joe Schmidt.
The Irish outhalf tweaked the muscle in the win against England and was replaced by Ian Madigan.
Sexton also had a hamstring problem during the Autumn internationals in 2013.
The man who works closest with the Irish number 10, skills and kicking coach Richie Murphy (pictured above), was quizzed about the issue by 98FM Sport's Stephen Doyle today
