Mark Hughes was left disappointed following his side's 3-0 pre-season defeat to Vanarama National League outfit, Chesterfield.
Goals from Joe Quigley (2) and Liam Mandeville were met without a City response as the Spireites comfortable saw their visitors off.
Hughes admitted his Bantams were not good enough in the penultimate game of pre-season.
He said: “We were not very good today. Credit to Chesterfield - I thought they were a lot better than we were.
“Much like us against Sunderland, they were better on the front foot and at anticipating things.
“We have to match teams’ physicality. If they are going to make things awkward for us, we have to be ready.
“There was possibly naivety. Every game is different and you have to think on your feet when playing a decent opposition.
“We got a little bit pegged in and needed to find space. They were very good at pressing which caused us problems.
“I am disappointed, because I wanted to create continuity with our performance levels.
“If we want to be successful this season, we need consistent results and performances.”
With the Sky Bet League Two season kicking off in a week, Hughes expressed his desire to ensure he has enough of a look at each of his players, hence awarding match minutes to the vast majority of the squad.
“I saw the opportunity and took it,” he added.
“It is important to have everyone available, and the more options I have, the better.
“I am pleased enough with parts of the game, but that performance was disappointing.
“We need to bang out results and performances to be consistent. Our level of standard has dropped since midweek, and we need to improve.”
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