Chelsea overconfidence worries Sarri
Ruben Loftus-Cheek's deflected strike got the 'Blues' off to the perfect start in the Black Country, only for second-half goals from Raul Jimenez and Diogo Jota to completely turn the game around.
Speaking after the game, Sarri slammed his side's attitude, questioning why they decided to play completely differently in the last 35 minutes of the game.
"Of course, after this match we lost confidence but maybe it is better because sometimes my players show me they have too much confidence," he fumed.
"It is more important to talk about our attitude after the first goal. We were not the same team as before, we were another team.
"Maybe it was important for the result but not for me. I have to understand why the team was suddenly another team because we were in control of the match.
"I thought we played very well for 55 minutes. After the first goal, that was an accident because we were in control of the match, we were suddenly another team, without our distances and without our football.
"I am very worried but not for the result, for the fact that we did not react to the first goal of the opponent. We didn't react at all so I am really very worried for this, not the result."
Following a strong start to the season, defeat at Molineux means Chelsea now drop down to fourth, with Sarri admitting that a title challenge is now probably beyond them.
"As I said before, Manchester City is in another category. Manchester City at the moment is not in our category. We have to play and we have to fight to be in the top four, I think," he admitted.
"The result is very difficult for this because I know very well in every match you need points. In Serie A, in the last championship, I lost with 91 points so I know very well that in every match we need to gain points.
"It is very difficult, the result, for staying in the top four."