Newcastle United boss Sam Allardyce was left "devastated" after yesterday's 4-1 home humiliation by Portsmouth.
He said: "Disappointed is an understatement - I am devastated by what has happened here today. I am completely gutted inside.
"The players have to go out and emulate that and put a performance on, be organised, understand how they should play, keep their shape, keep their discipline, use their abilities in the right areas, make sure they help their mate out if he has made a mistake and really go out and use their talents in the right part of the field.
"Unfortunately today, that did not happen. We lost all our discipline in the end and all our shape and organisation.
"Going chasing lost causes means you lose even deeper and harder and longer.
"We were our own worst enemy today. Portsmouth did not have to put us to the test because we gifted them the game in those 12 minutes."
Allardyce added: "While you can work as hard as you want in the week and put as much into your players as you possibly can and look forward to playing at home where we have done so well and have played with so much confidence, it was all destroyed in a 12-minute period at the beginning of the game."
