Mazzarri said: “We were not as sharp as in other occasions, but we still deserved the win even with a below par performance.”
Torino coach Gianni Di Biasi hit out at the referee after the match.
De Biasi said: “The disallowed goal was a bad decision and one that penalised us. There is no justification for it. The referee got it badly wrong and we are paying the price.”