Lewis Grabban came back to haunt his former club as Sunderland came away from Norwich with three points from an excellent 3-1 win.
The on-loan Bournemouth striker scored twice either side of a superb effort from Aiden McGeady to help the visitors to their first Sky Bet Championship success of the season.
Grabban also scored a late own goal to provide some consolation for Norwich, who deserved better, but it was Simon Grayson's side who ended up with a win to go with their opening-day draw.
Norwich made a bright start in their first home league match under Daniel Farke, with James Maddison winning an early free-kick on the edge of the box and seeing his curling effort deflected wide for a corner.