Chelsea boss Andre Villas-Boas has denied a Football Association charge over comments he made about referee Chris Foy after the 1-0 defeat by QPR.
The Portuguese admitted he was "very aggressive" with Foy, who sent off two Blues players and booked seven others.
Villas-Boas, 34, was charged with improper conduct on Friday after the club received an FA fine of £20,000.
A Chelsea statement read: "The manager is denying the charge against him and has submitted his response to the FA."
During the game, Jose Bosingwa was sent off for bringing down Shaun Wright-Phillips when through on goal, while Didier Drogba was red-carded for a two-footed lunge at Adel Taarabt.
The Blues were later fined after admitting a charge of failing to ensure their players conducted themselves in an orderly fashion.
Speaking after the defeat, Villas-Boas, who is in his first season as Chelsea manager, said: "The ref was poor, very very poor. And it reflected in the result.
"I spoke to him at the end and I was very aggressive to him. I don't care if he's OK or not.
"Everyone can have a bad day, but this was not a bad day for us. It was a good day for us and a bad day for the referee."