Goals from Pedro Rodriguez and Alvaro Morata gave Chelsea a deserved 2-0 lead inside 20 minutes of Saturday's London derby against Arsenal, with the Blues completely in control as they repeatedly carved open their opponents at will.
Arsenal clawed their way back into the game in the 37th minute when Henrikh Mkhitaryan drilled in a low shot that Kepa Arrizabalaga - the world's most expensive goalkeeper making his home debut - will have been disappointed to have let in.
Chelsea have won both of their Premier League games under Sarri, but were well beaten against Manchester City in the Community Shield.
"Not in this moment", said Sarri, who bemoaned a "horrible" final 15 minutes of the first-half that saw Chelsea throw away their advantage. We have to work, to improve, but in my opinion in two months we can be a very good team.
"Three points is an important target for us, we did very well for 75 minutes but inside that, 15 minutes were terrible", he said.More news: Ex-cricketer Imran Khan elected prime minister of Pakistan
"It was important that after three years of inconsistency in playing time in Madrid, I've got into a team that wants me and a coach that wants and trust me - that's how [the] Chelsea [loan] happened".
"The defensive phase of all the team, all players".
"In the second half we played with two midfielders, 19 and 21 years old". Goal, no goal, we need to continue working. "Unfortunately we weren't able to take all our chances".
However, Chelsea want Loftus-Cheek to stay and fight for his place despite the player being upset at being dropped from the squad.
Eden Hazard intends to remain at Chelsea this year but offered no assurances about his future beyond that. "I'm happy here, I do not want to talk about that yet", he told RMC Sport after Chelsea beat Arsenal 3-2. "Also, I think to play 25-30 minutes when the intensity of the game is going down, is better", he said. And now Mourinho is said to be adamant that Martial should leave before the European transfer window closes, but Woodward is keen to hold on unless they can get some serious money for the Frenchman.