Stuart McCall has demanded his side learn the desire to defend, following City's 5-0 Carabao Cup defeat to Sky Bet League One outfit Lincoln City.
Four first-half goals did the damage for the Imps at the Utilita Energy Stadium - who advance to the third round at the Bantams' expense.
The City boss labelled the goals as “cheap” and stressed his players must take note from their visitors.
McCall stated: “They showed us how to defend their goal from set plays and crosses into the box.
"They were clearing balls off the line, flinging themselves in front of crosses and just showing the desire to keep the ball out of their goal, which we have got to learn from.
“Unfortunately, it was a poor start. We gave away a cheap free-kick in the second minute which led to the goal.
“Then, they hit us on the counter attack with the second goal - which we did talk about, because we knew they had pace on the break.
“But, I think the third one was the 'game-over' goal and that was the hardest to take, because we then gave another cheap free-kick for the fourth.
“For their lad to score with a volley for the third goal - and not even a header - is just embarrassing, considering the size of the boys we had at the back.”
The Bantams continue their Sky Bet League Two campaign this Saturday (September 19) - at Forest Green Rovers (3.00pm).
McCall has ordered his players to dust themselves down and prepare for what remains of the league season.
He added: “We have got to galvanise each other, get our heads up and really go and put in a competitive performance down there.
“Do not get me wrong, it is doom and gloom now, but there are 45 league games to go, so we will be ready for Saturday.”
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