George North’s two tries drive Wales past Ireland in thundering win

• Wales 22-9 Ireland• Jamie Roberts scores late try to seal victory for home sideGeorge North sent Ireland’s title ambitions south after responding to a warning about his form with two tries in a thunderous encounter that Wales won with their heart and their head. The result means England will retain the championship with a round to spare if they defeat Scotland at Twickenham on Saturday.Ireland surprised Wales by agreeing to close the roof and they were equally caught out when they came out for the warm-up and found themselves wading on a wet surface. Unless the roof had developed more holes …