Manager Jose Mourinho praised Chelsea’s “perfect game” as they beat Swansea 5-0 but warned his players they must win titles if they want to be remembered.
First-half doubles by Oscar and Diego Costa and a late Andre Schurrle goal moved the Premier League leaders five points clear of Manchester City.
“It was a perfect game – everything went in our direction,” Mourinho said.
Nearest challengers City have a chance to reduce the gap to two points when they host Arsenal on Sunday.
And Mourinho would not entertain suggestions that the win in Wales increased the pressure on Manuel Pellegrini’s title challengers.
“I don’t think they feel it,” the Chelsea manager said. “They have to win but they know that.
“We don’t feel pressure, we feel responsibility. And for a team like them with the experience they have – much more than us – it’s not a problem.
“This team is a young team with lots of years in front of them, but we are trying this season to make some history by winning something.”