Manager Antonio Conte says Chelsea must learn to "think like a great team" following Friday's 2-1 defeat to Liverpool.
The Blues suffered their first Premier League defeat of the season on Friday as Liverpool left Stamford Bridge with all three points.
The visitors held a 2-0 lead at the break and Chelsea couldn't rescue a point after Diego Costa reduced the deficit just after the hour mark.
Conte refused to be too critical of his players however, but he admits he sees plenty of room for improvement.
"We conceded the goals in a strange way," he told reporters. "They took the free-kick quickly for the first goal and it was a great shot from a long distance for the second but if we are in the right position he must not receive the ball unmarked.
"When you want to think like a great team you must pay attention in every moment.
"We played with good intensity and anger in the second half. We scored a goal and could have scored another with Diego Costa. We played a good second half.
"I must work more to improve my players. Defeats are never good. We know this, we must work and keep our concentration."