A resigned-looking Maurizio Sarri admitted that he has no idea how his Chelsea side were beaten so badly by Manchester City at the Etihad.
Sergio Aguero scored a record-equalling hat-trick as City powered back to the top of the Premier League with a sensational 6-0 win over the Blues.
The prolific Argentinian joined Alan Shearer on 11 Premier League trebles as the champions returned to their ruthless best in a one-sided encounter at the Etihad Stadium.
Most of the damage came in a whirlwind opening 25 minutes, with Aguero hitting his first two of the afternoon between strikes from Raheem Sterling and Ilkay Gundogan.
That established Aguero as City’s record league goalscorer, surpassing the 158 goals of Eric Brook and Tommy Johnson, and he later extended his tally to 160 by completing his treble from the spot.
Sterling put the seal on the rout by adding his second 10 minutes from time.
“At the moment I am not able to explain,” he told Sky Sports.
During the week my feeling was good during training. Maybe the goal we concede after three minutes it was difficult to play. It was difficult not to give them spaces. We were in trouble. I am not able to understand.
“We made a lot of mistakes against the wrong opponents. They played fantastic football and we made a lot of mistakes. We wanted to press them at the beginning of the action but the plan was completely ruined because we concede after three minutes.
“I think the big difference between the two teams was the intensity of pressing. They pressed really well and we were not able to do it. We were not able to react in the right way. We were not able to stay in the match.
“At the moment we have a big problem away. The beginning of the season we were better away than at home. But everything has changed in the last month. We need to understand.
“It is right. I am in charge of the team so it is right [that he faces pressure]. You will have to ask the club [if there will be discussions about his future].”
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