The Bluebirds, backed by over 1,000 travelling fans, deservedly took the lead after a quarter of an hour when McCormack finished off from close, despite the Portuguese defenders' offside appeals.
The former Rangers man bagged his second midway through the second half with a neat lob of the keeper and simple finish.
Vitoria were handed a consolation when Kennedy was penalised in the City box and the Portuguese side converted the spot-kick.



