The Blues got their campaign to the worst possible start following their defeat in Zagreb.
Chelsea manager Thomas Tuchel has admitted his side were poor in their opening game of this year's Champions League against Dinamo Zagreb.
Chelsea got their Champions League campaign to the worst possible start after losing 1-0 to the Croatian champions at Maksimir Stadium.
The Blues went into the game on the back of a 2-1 win over West Ham but were second best in their opening match of this year's Champions League.
Mislav Orsic's excellent goal was enough to condemn Chelsea to another defeat. The result is the latest in a series of underwhelming performances from The Blues.
While they did create a couple of chances, Dinamo were good value for the win, a view shared by Tuchel.
The German tactician was not shy to express his frustration following the game, saying his players were not at the level they should be.
"It's a lack of hunger, intensity, a lack of determination to win duels to actually do the things on the highest level," Tuchel said after the game.
"You cannot expect to win games, not in the Premier League or Champions League."
Tuchel, however, admits he is also culpable, suggesting he cannot pinpoint what exactly is the team's problem this season.
"It's too much to analyse. I'm a part of it," he added.
We're not where we need to be and where we can be.
It's on me and on us, and at the moment, everything is missing," the former Borussia Dortmund manager added.
Chelsea have no time to dwell on the defeat as they face Fulham in the Premier League on Saturday before hosting Salzbur next week Wednesday in their second group game.