Fatigue may have played its part in Chelsea's shock loss against West Ham on Saturday.
This is the view from Jorginho.
The Blues were in action against Valencia in the Champions League on Wednesday in an enthralling and end-to-end encounter that finished 2-2, with both sides squandering late chances to grab a winner.
And Jorginho admitted that tiredness may have played a factor in the loss against West Ham on Wednesday afternoon - but pinpointed another factor that he felt was more decisive.
"Maybe [tiredness played a part], but we created some chances but didn't score. That's the problem," Jorginho told the BBC.
"I think we were not clinical, we need to be more clinical when we create the chances.
"We weren't and then we conceded.
"Then it is difficult."
Chelsea were beaten 1-0 by London rivals West Ham, with Aaron Cresswell grabbing the only goal of the game just after half-time.
The Blues came close to scoring on a few occasions, but were met by goalkeeper David Martin, who was making his West Ham debut at the age of 33.
It was Chelsea's second loss in a row in the Premier League after the defeat against Manchester City last weekend, which has seen them drop from joint second in the table to fourth.
