Frank Lampard has called on Chelsea to improve on their start to the season and light up the Premier League to show their title credentials.
The Blues are joint second in the standings with Liverpool, four points behind leaders Arsenal, despite failing to fire on all cylinders at the start of Jose Mourinho's second spell in charge.
There were flashes again at West Ham on Saturday night, when Lampard scored twice against his former club in a 3-0 win, but the England midfielder is demanding more from the Blues, whose next Premier League contest is at home to Southampton.
"Nobody has caught fire except perhaps Arsenal and we are in touching distance of them," Lampard said.
"We are in a position where we can say 'Yes, we want to improve and challenge to win the league'. I think we are in a good spot to do that.
"If we can do it over 10 games and put a real run of wins together then maybe we will scare other teams. "But at the moment, everybody is in the mix and nobody has pulled away, so we have to try to put that run together."
Chelsea recovered from defeat at Newcastle and a last-gasp draw with West Brom to claim just a second away win of the season at Upton Park.
"Our away form has not been great," Lampard added. "That is probably what has kept us off the top of the league."
The Saints clash is the first in December, which sees fixtures against Sunderland, Stoke and Crystal Palace, before the trip to Arsenal on December 23. Lampard added: "We will focus game by game, although obviously Arsenal is there in the back of our minds.
"It is important to keep the form up till then and then hopefully go there and have a ding-dong with them."