The Sixth Round clash was a replay of last year’s final, in which the Latics also triumphed before slipping to relegation.
The result once again went in favour of the underdogs – who travelled to the Sky Blues’ home ground – as Jordi Gomez’s penalty and James Perch’s close range finish booked the Championship outfit’s slot in the semi-finals.
City fought back late on, but a Samir Nasri effort was not enough to muster up a comeback.
Pellegrini was angered with his team after the final whistle, and believes that their first-half showing was the poorest he has overseen since arriving at the Etihad Stadium last year:
“I think it’s the worst first half we’ve had in the year because we didn’t have the pace to play against a team that is in a good moment,” he is quoted by Sky Sports.
“They won five games in a row so we knew before the match we are going to play a difficult team, maybe we thought that was not going to be so difficult and when we react it was too late.”
The Chilean went on to say that Wigan showed more desire and fight than his side:
“We knew exactly how Wigan play; it’s not a tactical problem, it was a pace problem, a tempo problem,
“In the last 35 minutes they continue playing the same way and we continue playing the same way.
“We had at least three of four chances to score more goals. When you don’t have the same intensity it’s very difficult to win.”