Chelsea boss Thomas Tuchel as left unhappy with the Elland Road pitch for their 0-0 draw at Leeds on Saturday.
Leeds are actively seek to fix their surface, though Tuchel insists it was a factor.
"We have to keep on working hard, be more clinical and play more precisely in the opponent's box," he said.
"It was not so nice to play and the pitch isn't in a good condition. It was very bouncy, very slippery. Was it a factor? You can never be sure.
"Also our timing in the last 20 metres and our position and composure needs to be more clinical. We've had that subject in many games."
He added: "In general, I'm happy. Maybe for the spectators on TV, it's not so clear, but on a pitch like this, against a team like Leeds, who put a lot of pressure on you all of the time, we escaped many times out of the pressure in a very fluid style."
