It was a good night all round for City as Kolo Toure was named skipper as he played his first game since completing a six-month ban for a failed drugs test.
"I am happy for him too," said Mancini.
"It was the correct decision to choose him as captain."
Mancini also had words of praise for Wayne Bridge and Nedum Onuoha, who were both selected despite previously being told they had no future at the club.
"It is difficult for them to play often but they did very well," he said.