After the goal, I think we thought now it's easy, but it wasn't.
However, Burnley claimed a 2-1 victory over Fulham, despite not registering a shot on target, to move away from the relegation zone.
"You know very well that Willian for us is a very important player", Sarri told reporters.
Maurizio Sarri's men would pay for their failure to create anything clear cut, though, as Newcastle soon started to grow into the match. I have been here for five and a half years, won a lot of titles.
"I am very happy with the result but the performance was not so good, especially between 1-0 and 1-1", he said. "I need an option for that position", he sad. The club knows very well my opinion. I didn't see the papers'. "I can not do anything more".
Sources have told ESPN FC it would take a significant cash bid for Chelsea to consider parting with Willian, regarded by Sarri as a key first-team player. "For us, in this moment, he is a fundamental player".
0:35 Newcastle manager Rafael Benitez has urged his players to stay calm in their fight against relegation following their 2
"We slept for 25 minutes and then we were in trouble".
"After the goal something happened, we stopped playing". I think that we need to improve our mentality in total.
The goal galvanised Newcastle and they ended the half on top, with Chelsea struggling to break them down - and there were even audible boos from the home crowd as Jorginho played the ball straight out of play early in the second period.
Once again, Sarri stubbornly stuck to his experiment with Eden Hazard as Chelsea's central striker despite the Belgian star's dislike of the tactic.
But it took only nine minutes for the Blues to go in front as Newcastle's five-man defence was carved open easily.
"We've played the top sides and the pressure is nearly more than them that it is on us because they're expected to beat us, and if we can get anything out of those games then it's great".