John Obi Mikel has apologised for the mistake that forced Chelsea to settle for a 2-2 draw with Juventus at Stamford Bridge on Wednesday.
The UEFA Champions League holders blew a two-goal lead with a defensive blunder costing them dearly against the Italian giants.
Having allowed Juve to get back into the Group E clash before half-time, Chelsea looked set to sneak a win before Mikel needlessly gave the ball away 10 minutes from time.
And the Nigerian midfielder had no excuses for the error that cost his team.
"If I want to make up an excuse, I can," Mikel said.
"But, for me, I gave the ball away. I put my hands up, we move on.
"I'm sorry about the mistake, but there are no excuses."
Blues boss Roberto Di Matteo admitted Chelsea only had themselves to blame for surrendering two points.
And Mikel added: "I think that's what you get from playing in the Champions League.
"You make a mistake, you get punished for it.
"I think we looked so good all throughout the game, except when it was 2-2. We just lost our head."