Canaries are on song for United game
The Canaries, who had chalked up a first top-flight win at Bolton last weekend, went ahead on 31 minutes when centre-back Leon Barnett swept home from close range after winger Elliott Bennett had capitalised on some lacklustre defending.
Wales forward Steve Morison powered in a bullet header at the start of the second half after the Black Cats were again caught napping at the back, before substitute Kieran Richardson set up a tense finale when he drilled in a late consolation.
Lambert said: “I knew beforehand if we could win this one, then we would go to Old Trafford a bit more buoyant than just going up there and getting turned over.”