EDIN Dzeko has conceded Manchester City underestimated Sunderland after surrendering two vital points in the title race.
Manchester United can extend their lead at the top of the table to five points with victory at Blackburn on Monday night and turn the heat up on City who have suffered a dip in form at a crucial stage of the season.
City fought back from 3-1 down to earn a point in a frustrating 3-3 draw with Sunderland and while Dzeko has said City will not give up the fight, he has revealed they should have taken Saturday's opposition more seriously.
"Maybe we thought Saturday was going to be easy. We had won all our home games so maybe we thought we could count on all three points - but it's not like that, and you have to fight for every point," he said.
Dzeko has challenged his team-mates to win every game from now and the end of the season - which includes next Sunday's trip to Arsenal.
"They are fighting for a Champions League place and are a top team, so it won't be easy. It should be a good, open game," he said.
"There are seven games to play, and the way we dropped points, United can drop points as well, so everything is still open."