Bradford boss Phil Parkinson was left shellshocked by the 5-0 defeat at Hartlepool in the Johnstone's Paint Trophy.
The Bantams did not trouble Hartlepool all night as they conceded five goals for the first time since losing to Swansea in last season's Capital One Cup final.
Pools had only one goal in six games to their name this season, but after Luke James headed them in front after 24 minutes, they never looked back.
Jon Franks, Christian Burgess, Jack Compton and Nialle Rodney completed the rout after the break.
Parkinson admitted: "It was a performance I really didn't see coming. We made changes, but that is no excuse as we have made changes before and that was a strong team we had out.
"The one thing you have to do when you pull on a Bradford shirt is play with commitment and desire and a will to win. Come off and say you have given everything to the cause and I can't say we did that here.
"The first 20 minutes was tight, nothing in it, and then we conceded and from then on we struggled."
He added: "Hartlepool were excellent, they looked a young and hungry team out there.
"Did they catch us cold? Well they grew in confidence with the goals and as the game went on they were a better team for it.
"I watched the DVD of their game with Fleetwood when they played very well but didn't score. They've only scored one goal this season - and suddenly they get five."