Adam Johnson came back to haunt his former employers by grabbing the winner for the Black Cats in a 1-0 victory at the Stadium of Light, as Roberto Mancini’s men fell seven points behind leaders Manchester United.
And the Spain international admits that defeat was difficult to take as City aim to return to winning ways at Norwich on Saturday.
“The defeat in Sunderland was a hard blow for us. Nobody believed we would lose,” Silva told the Sun.
“As a team we have a huge desire to repeat our title success.
“But as we know that the Premier League is very open and if you give away chances you can be beaten.
“Even so, there was a lot of anger in the dressing room — and not only from the coach.
“Those three points were so important because in our situation they could make the difference between us winning and losing the title.
“And really, if we do not win at places like Sunderland, it is nearly impossible to fight for the success in this league.”