Liverpool skipper Steven Gerrard has warned him team-mates they have proved nothing yet as they sit on top of the Premier League with just a quarter of the season gone.
The 28-year-old feels Chelsea, who lost their 86-game unbeaten record to the Reds on Sunday, will come back stronger and also that Manchester United will begin to find their form.
Gerrard told The Times: "It's important not to get carried away. We're still only in October. We're in a nice position in the league, but Chelsea are a fantastic side, who will come back, and Manchester United will be there or thereabouts.
"We've won nothing yet. It was a massive win and three big points, but if we slip up against Portsmouth, those points will be irrelevant.
"To win this league and become champions, you have to handle the pressure of being at the top.
"That's the challenge for us now. Can we handle being top of the league? We've done superbly well so far, we're unbeaten, and we have to keep that going now, starting against Portsmouth.''