Leinster have enjoyed some great days at the expense of Northampton Saints but Leo Cullen has learned to approach games against the English club with his eyes open and on full alert.

Wales have the attributes to turn an Irish strength into a potential weakness. Here are the three key areas of combat. 

Northampton 27 Ospreys 16

Benetton Treviso 12 Ospreys 6

THE Ospreys ended Ulster’s unbeaten run as they continued their own with a workmanlike triumph at Liberty Stadium yesterday afternoon.