Manchester United went 10 points clear of their rivals with a solid performance and subsequent 3-0 win over Fulham on Wednesday.
Before that game, the United boss suggested that only Liverpool could realistically catch the reigning champions at this stage in the competition.
Cech, though, refuses to concede defeat and insists Chelsea can still win the title with a good run, starting by beating Aston Villa at the weekend.
Chance"Regarding the table and the position we are now in, we need to try and win, I think a draw won't change anything except our chances for the title," Cech told Chelsea TV.
"But this is the first game where we should start our run, because if we are going to catch Manchester United we have to keep winning every game."