Manchester City boss Manuel Pellegrini was shocked by their 4-1 thrashing at the hands of Liverpool.
An own goal from Eliaquim Mangala was followed by efforts from Philippe Coutinho and Roberto Firmino as City conceded three league goals in the first half for the first time since February 2003.
Sergio Aguero's ninth of the season just before the break on his return from injury barely softened the blow with Reds defender Martin Skrtel brilliantly volleying home in the second half to complete the rout.
"I am more than angry, it is unbelievable the performance we had," said Pellegrini.
"I have never seen this team play in the way they did tonight.
"It was a complete disaster, the whole team.
"It is difficult to understand why we should play so badly - not just one name but a complete team in defending or attacking possession.
"I think we didn't prepare - we lost so many balls in attack it was impossible to create chances, we conceded four goals and could have conceded at least three or four more."
Source: tribalfootball.com