Which Welsh rugby player would call his autobiography 'Overrated' and why does Jake Ball make Samson Lee angry? Sport Wales' Dot Davies finds out how well the Wales rugby players know each other.
Earlier in the week we got to know a little bit more about Mike Phillips, Jonathan Davies and Leigh Halfpenny, but how much do these players know about their team-mates?
Dot Davies is a reporter for Sport Wales and Clwb Rygbi. Sport Wales is on BBC Two Wales every Friday at 19:00 GMT. Clwb Rygbi has live coverage of the Wales v Ireland game on S4C from 13:45GMT.