KENNY Jackett labelled Millwall's defending "embarrassing" after watching his side surrender a 3-0 lead against Birmingham.
The Lions were in control of the match after opening up a seemingly unassailable lead inside the first 20 minutes thanks to Chris Wood's double and Chris Taylor's first goal for the club.
But Marlon King struck a 19-minute hat-trick to rescue a point for the Blues and Jackett was left fuming.
"It was very frustrating," he said. "The goals against column for us this season is embarrassing. It's why we are where we are in the table.
"You can't give three goals away and expect to get anything on too many occasions. It was a shame because it covered up some of our best attacking football this season.
"The first 45 minutes was very good and we finished the game strongly. We put pressure on the opposition by putting some very good balls across the box that we were unlucky not to get on the end of.
"There was a flurry of late corners as well and we finished the game in the right way. But people don't need too many shots to score against us.
"I understand that it's a clinical division and King has got a hat-trick tonight, but there's a high number of goals being scored against us from a low number of shots. We have to reduce that."
King's first goal, which came on the stroke of half-time, arguably swung the momentum of the game back in the Blues' favour, but Jackett did not accept that as a mitigating factor.
"Momentum is a big thing in a game, and I do understand that," he said. "But even so, when you're 3-1 up at half-time you have to take stock and go again.
"Perhaps it gave them something to hold onto, but from my own point of view it's been a dozen games and we haven't had a clean sheet.
"We gave King too much time in the box on too many occasions, and he punished us."