SO, WHAT IS WARRENBALL?

IT’S based around using big ballcarriers to smash over the gainline. Gatland likes heavy men in the centres to bludgeon the opposition. Look out for 16st Irish centre Robbie Henshaw (pictured) receiving the ball flat and battering his way through. In the pack, James Haskell and Courtney Lawes use a blitz defence, rushing up to close down attackers and forcing them back with huge hits.