The Blues surrendered their 100 percent record in the league as they were held to a 0-0 draw by West Ham on Sunday, meaning the Reds are now the only side with a flawless streak.
It was a statistic that summed up a dreary display in which they created very little of note until subs Alvaro Morata and Ross Barkley forced late saves from Lukasz Fabianski.
Liverpool are among the favourites to rival Manchester City for the Premier League title this season and it is easy to see why after six wins from six.
Sarri is still working to impose his playing style at Chelsea, and warned it could take at least 12 months for his team to reach a similar level to that of the Premier League leaders. Maybe we need to give a bit more on the pitch as well. I don't know why they lost their first four matches in the league, but they are really a very good team.
"We have started to work together 35, 40 days ago".
"It's very hard to play in the Europa League, but more hard in March and April, not now", Sarri said.
[Teams] West Ham vs Chelsea: Confirmed Line-Ups From The London Stadium
"I knew that West Ham are a very good team".
"Maybe we could have done better in the last 25 minutes of the first half".
"I think we have played well in the second half, but it's impossible to win every match".
The Germany worldwide joins Pedro Rodriguez on the sidelines, but the Chelsea head coach is hopeful of being able to call upon both when Liverpool visit Stamford Bridge in the Premier League on Saturday. But today it was very hard to play inside.
"We forced them to play most of the game from the right side, not the left side where Marcos Alonso and Eden Hazard are so risky".
Declan Rice said West Ham are now "buzzing" after putting their dismal start to the season behind them.