Manchester City playmaker David Silva is wary of arch-rivals Manchester United and accepts there is little room for error in the title race.
City strengthened their status as favourites for the Barclays Premier League crown by winning at Hull last weekend while leaders Chelsea slipped up at Aston Villa.
Those results left City trailing the Londoners by six points with three games in hand, but they still have a number of difficult fixtures among the 11 they have remaining.
Of those, the derby against fallen champions United at Old Trafford next Tuesday is starting to loom large. Attention will shift fully to that game after tomorrow's home clash with struggling Fulham.
Silva said: "First thing, we have to think of Saturday, but a derby is a derby. At the moment we are better but in any derby anything can happen.
"So we just have to go out and win the matches. It's a derby but the powers (in the city) don't shift in derbies.
"We have won (there) the last two years, and hopefully this will be the third one."
The Spaniard also believes what happened to Chelsea last weekend should serve as a warning that City cannot afford any complacency.
And with Liverpool and Arsenal also still in contention for the title, any slip-ups could be seized upon by rivals.
Silva said: "In this league every game is difficult and it's important to keep your focus.
"It happened to them (Chelsea) and it has happened to us – every game is difficult and anyone can beat anyone.
"This is why you have to fight all the way to the end in every match."
Silva's immediate concern is tomorrow's visit of Fulham.
The Premier League is now City's sole objective after their recent exits from the FA Cup and Champions League.
Silva (28) said: "These next two games are important, but we have to go match by match.
"All the matches now are like finals and we have to win them all. They are very important games for City now.
"It's a very good situation to be in, to have your destiny in your own hands.
"Also it could play against us, but to be in the position where if we win all our matches we are champions is a good place to be."