NIGEL Clough was furious with referee Darren Drysdale after Derby County's 2-1 defeat at Millwall.
Clough saw a number of key decisions go against his team in Saturday's Championship clash at The Den.
He felt Liam Feeney's opening goal for the Lions should have been disallowed for offside.
And the Rams manager also felt his side should have had two penalties.
Millwall's controversial first goal came after 32 minutes.
Feeney arrived at the back post to score but the assistant referee's flag was already up for offside against striker Andy Keogh in the middle of the goal as he tried to turn in Shane Lowry's low centre before Feeney did.
Referee Drysdale spoke with his assistant and gave the goal.
The decision left Clough with questions.
Asked if he had received an explanation as to why the goal was awarded despite the flag being raised, Clough said: "No, we're not privy to the conversation between the officials and we asked the players not to approach them.
"The assistant flagged for offside, kept his flag up and was insistent. The referee went over and gave the goal. Why he did that, I don't know.
"I presume the flag was up for offside against Keogh because the lad who scored didn't look offside.
"Keogh was in the middle of the box and once he makes an active movement to go for the ball, then it affects all the defenders around him.
"He actually went for the ball and whether he touched it or not, he must have been extremely close to it.
"He has gone for the ball and I would say that is interfering with play."
Derby's claims for penalties came in the closing minutes of each half.
The first was for a tackle on Paul Coutts, the second for a challenge on Theo Robinson late on.
"I thought we should have had a penalty at the end and we certainly should have had one at the end of the first half," said Clough.
"It happens sometimes. We cannot control that, we can only control our own performance, which was a bit disappointing in the first half, but we were still entitled to go in on level terms but for a disputed goal or a penalty.
"I was a bit disappointed with the first half because we started well without hurting them.
"We should have got a goal in that first 15 minutes but our balls into the box weren't good enough and the strikers' play wasn't good enough.
"Millwall then got on top and the goal, coupled with the penalty (appeal) going against us, meant the players felt extremely aggrieved coming in at half-time.
"You've got to put all that behind you and go out and play in the second half and I thought in the second half we were excellent.
"We played some great stuff, scored a great goal and we just let ourselves down a bit by conceding the second goal through our mistake."
Craig Bryson was caught in the area trying to shield the ball out for a goal kick and Keogh hit Millwall's winner 14 minutes from time.
"I don't understand why they (players) do it," said Clough. "He (Bryson) should be kicking the ball over the stand into any other part of London that he can.
"When you are at 1-1 against Millwall at The Den and playing for a winner, you make sure you don't concede.
"But we haven't played badly over the course of the whole game. I think we played well enough, certainly in the second half, to get something.
"It was just one of those games and, without a doubt, the decisions played a part, which is sad really. It should be more about what the two teams do."
Clough felt Derby had enough of a threat on the pitch to rescue the game without the need to call on substitute Nathan Tyson.
Tyson had come off the bench to score in two of the previous four games but the striker was unused at the weekend.
The one substitution saw winger Michael Jacobs replace Conor Sammon.
Jacobs went to the left and Robinson moved up front as Derby kept their shape, having switched from 4-4-2 shortly before half time to accomodate Will Hughes in central midfield.
They improved in the second half. Hughes equalised and the Rams kept pressing for a second equaliser after they fell behind again.
"When you've got such control of the game, there's no point changing it even further because you are chasing a goal," said Clough.
"We were creating chances and bossing the game. We weren't going to create any more by going back to 4-4-2.
"At that point, we wanted a bit of width and he (Jacobs) got a couple of crosses in.
"I thought we could easily have had at least an equaliser."
But Clough admits he was tempted to turn to Tyson.
"Of course we were but then again Theo is more of a goalscorer than Nathan is," said Clough. "When you are struggling to create, maybe that's a good time to put Nathan on but I don't think that was the case."
