West Ham boss Sam Allardyce signalled his intention to launch an emergency recruitment drive for defenders after seeing his injury-hit side crash 3-0 at Sunderland.
The Hammers slipped to defeat at the Stadium of Light with James Collins limping off in agony with a grade three hamstring tear to join George McCartney and Joey O'Brien on the sidelines.
Allardyce said: "The big blow for me is not having enough defenders at the moment. There are too many of my defenders injured."
He added: "We have had too many injuries recently, but the injury situation with defenders with George McCartney not being here, Joey O'Brien not being here and James Collins getting injured today means that the defensive side of our team is particularly weak and short of numbers now.
"I am really going to have to go and try to strengthen that area in the next few days."
Sunderland went ahead after 12 minutes when Sebastian Larsson smashed home a left-foot piledriver, his first goal of the season, and they never looked back as the Hammers succumbed with barely a whimper.
Adam Johnson doubled their advantage within two minutes of the restart when he cashed in on Dan Potts' error, and James McClean made sure of the points with a third 16 minutes from time after Stephane Sessegnon, not for the first time, had terrorised the visitors' defence.
Allardyce's opposite number Martin O'Neill was more than satisfied with a victory which lifted his side six points clear of the relegation zone.
He said: "There's always pressure. The win was important for us. I think anybody in the bottom half of the table still has to be looking anxiously over their shoulder. But it was an important win for us - I think it's our fourth in seven games in the Premier League and in the context of things, it was good to win."
Meanwhile, O'Neill confirmed that Senegal international defender Kader Mangane is heading for Wearside in the hope of clinching a loan deal until the end of the season. He said: "I'm hoping that he's making his way over at this minute. I'm not sure that anything has been absolutely and utterly completed, but it would be a loan until the end of the season."