Antonio Conte believes Chelsea must win every remaining Premier League game to beat Manchester City to the title.
On Saturday the Blues go to West Brom, where the title was secured in May in Conte's first season as boss, with a deficit of nine points to Pep Guardiola's City after 11 games.
Chelsea are the odds-on favourites at 3/5 with Sky Bet to beat West Brom, who can be backed to spring a surprise at 5/1.
Conte said: "Now Manchester City is playing very well.
"If you want to try to catch them, you have to win every game.
"If you want to try to fight for the title, it's very important to win and not to drop points."
City are odds-on at 1/7 to win the title. Chelsea are fourth in the outright odds at 20/1, that's also behind Manchester United and Tottenham (both 14/1).
Conte spoke of City's summer strengthening, which some will suggest was a renewed expression of frustration at Chelsea's own transfer market.
Asked about City's summer recruitment, the Italian said: "I was worried because they were working very well in all aspects. Not only on the pitch, but off it as well.
"They can fight to win everything."
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