Sam Allardyce fumed at his defence for putting on a "rubbish" and "comical" performance as West Ham crashed out of the Capital One Cup with a 4-1 thrashing at the hands of Wigan.
The Hammers went in to the match having lost just one of their previous six games, but they were easily torn apart by Wigan in the third round clash at Upton Park.
"There were howling errors from our defenders in all four goals, it was comical," Allardyce said. "I never expected us to defend so poorly. It was really poor defending and all the good work we might have done with the ball meant nothing in the end because out of possession we were just rubbish."
The west London club took the lead through Modibo Maiga, but a series of calamitous errors allowed Roberto Martinez's team to progress.
Slack marking from Jordan Spence allowed Mauro Boselli to equalise and the Hammers defence backed off Ivan Ramis to allow the Spaniard to put the away side 2-1 ahead.
Yet more loose marking allowed Boselli to chip home a wonderful third and Stephen Henderson's foul on James McArthur in the dying minutes allowed Jordi Gomez to seal the rout to leave Allardyce red-faced with embarrassment at the final whistle
Martinez cut a much happier figure at the end of the game, with Boselli's performance the main source of joy for the Latics boss.
The Wigan boss said: "He looked strong, he looked very sharp with his build-up play and then that clinical finishing in front of goal.
"I was very, very pleased with his work. It is now a matter of allowing him to settle into the Barclays Premier League.
"He showed mental strength and how focused he is to be a success this season and to enjoy his football. If he is at his best he will be a real asset for us."