Scrum V Pro12: Ospreys v Ulster

Scrum V preview the Pro12 clash between former champions, the Ospreys, and last season's beaten finalists, Ulster, at the Liberty Stadium.

The home side have their five victorious British and Irish Lions back in the side to face Ulster.

Also discover who is their secret weapon so far this season and is one of the reasons why they are one of only two unbeaten sides in the Pro12.