Manchester City manager Roberto Mancini was left to ponder his thoughts after watching his side's Premier League title challenge take a dent at Wolverhampton Wanderers on Saturday.
The Citizens fell to a disappointing 2-1 defeat at Molineux after striker Emmanuel Adebayor had put them ahead from the penalty spot.
Goals by Nenad Milijas and David Edwards resulted in an unexpected home victory and Mancini knows that his team must do better if they are to stay in the title hunt this term.
"We only played for the first 25 minutes," lamented Mancini."We played very well during that period of the game and had four or five chances to score.
"But then we stopped playing and Wolves deserved to win this game. It was the worst game we have played. I don't know why this happened but we must regroup and understand why this happened.
"Maybe we thought after 20 minutes that it was an easy game. A team can lose but you can't lose like we did – playing like that for 60-70 minutes.
"This was the sort of game you have to win if you want to challenge for the title. You must play all games at 115 per cent. I must understand very quickly why this happened."