Jose Mourinho knows that they are just one game from recording another Premier League title.
"We have been top of the league since day one against a team who has one three games in a row," he said.
"It was fantastic the way we did it.
"I know what I feel in relation in the work we have done in last two years. I know what we are and in a very pragmatic way, we are what every team wants to be.
"We were stylish in defence, and coped with their direct style. But in the second half you saw our quality.
"We need to win on Sunday and the fans need to push us towards the three points we need.
When I arrived two years ago, Chelsea was struggling, we finished third last season. Now we need three points to be champions and the players can be proud of themselves."