Darren Ferguson admitted he felt the need to apologise to Doncaster Rovers supporters for the lifeless performance of his side in the derby defeat to Sheffield United.
Che Adams scored the only goal of the game just before half-time to condemn Rovers to their fifth consecutive game without victory, a result which leaves them only six points clear of the League One relegation zone.
“I would have to say I have to apologise to the fans for that, because I would not be happy if I’d watched that,” Ferguson said.
“That is not what I have come to expect from my team.
“It’s something that needs to be sorted out quickly.
“I can’t defend that performance. It was the complete opposite of what I wanted.
“It was a surprising performance from us.
“There was no tempo, no energy, no quality, no composure.
“We had one or two maybe half things but it was a really off day.
“It was probably the worst performance since I’ve been here, on a big day like this.”
A disjointed Rovers side struggled to create chances throughout the game and failed to produced a revitalised performance in the second half, which they entered a goal down.
It meant for a rather comfortable afternoon for United who never looked like conceding their lead.
Ferguson - who watched from the Keepmoat Stadium control box due to his touchline ban - said he was left “bored” by a lack-lustre South Yorkshire derby.
He said: “Quite honestly, I was completely bored to tears by the game.
“It was one of the most boring games of football, certainly a derby, that I’ve ever seen.
“It wasn’t even like a derby, there were no tackles and atmosphere.”