NEIL Harris could not hide his frustration after Millwall threw away a two-goal lead to draw with Derby, leaving them on the brink of relegation.
The Lions will drop down to League One if Rotherham, who drew 1-1 with Norwich, beat Reading at the New York Stadium on Tuesday.
Lee Gregory's hat-trick – the first of his professional career – had put Millwall on course for a huge victory in their battle to stay up.
But their 3-1 lead was wiped out by Chris Martin's penalty – a decision Harris branded "ridiculous" – and Jeff Hendrick's volley five minutes from time.
Harris was particularly upset with his side's defending for Derby's first goal, a 20-yard free-kick scored by Tom Ince which made it 2-1 before half time.
The Lions boss said: "If you score three goals at home, you expect to win.
"We've got enough senior players in the dressing room and on the pitch to see the game out.
"Their first goal was really poor – it was a poor set-piece to concede from. It was a good free-kick but we didn't have the right set up.
"I've not had a go at the players but if they get simple things wrong like their shape at set-pieces then, yes, words will be said.
"The second one was a very soft penalty. I think the boy [Ince] has done really well to buy it. It was a ridiculous decision.
"For the third one, sometimes you have to hold your hands up and say 'what a great finish' but to be 3-1 up and not win is disappointing.
"I'm certainly not accepting 'well done' for getting a point, especially at home, when the bottom line at Millwall is winning home games."
Harris was asked how he picks his players up after this result, and said: "We can't at the moment. That's Monday morning. They'll come in and pick themselves up.
"And we have to sit and wait to see how Rotherham get on against Reading.
"While we've been behind them, it's always been out of our hands so that doesn't change. But it's simple: if Rotherham win on Tuesday, we'll be relegated."
One positive for Harris to reflect on was Gregory's treble.
Having missed his last penalty against Charlton, the striker showed commendable composure to convert twice from the spot.
"Lee scored two penalties because he now takes ten in training every day," Harris said.
"To be a top player and score regularly, that's what you have to do.
"We now do finishing practise everyday and we get into good habits. Lee deserves those three goals because he's an absolute top player.
"That'll give him huge belief and next year he'll score 20 goals whichever division we're in."