Thibaut Courtois believes Chelsea's next two games will prove whether they are genuine title contenders or not.
Chelsea beat Middlesbrough 1-0 yesterday to secure a sixth straight League win and moved to first place in the table.
However, they now face their stiffest test of their form so far, with a match at home to unbeaten Tottenham on Saturday followed by a trip to Manchester City a week later.
Courtois admits Chelsea, who finished a lowly 10th last term, have nothing to be excited about just yet.
He said: "It is very nice to be top again. We have fought hard. It was a difficult season last year for the fans and the club, the players had a lot of criticism as well.
"But we can't relax now. We face two big opponents now and hopefully we can show that we are ready to fight for the title."
