John Terry has said that it will be "tough" for Chelsea's Premier League title rivals to overtake them at the top of the table.
The team's 2-0 win over West Ham United briefly moved them six points clear, before Manchester City reduced their advantage to three points.
The captain, who scored in the win over the Hammers, told Sky Sports News: "We're playing great now, everyone can see that, and if we continue to do that it's going to be tough.
"We've got off to a good start, and if we continue our form it's going to be tough for anyone. We are playing great at the minute but that can change over two or three games, everyone's seen that.
"It's important we remain calm and keep doing what we're doing right now which is playing good at the moment. I see a hunger among the players that haven't won the league."
Chelsea are away at Southampton in the league tomorrow.
