Chelsea manager Antonio Conte rues the single mistake which gifted Barcelona a 1-1 draw at Stamford Bridge and prevented the "perfect game".
Willian had put the Blues 1-0 up just after the hour mark but a horrible pass by Andreas Christensen along his own penalty box allowed Lionel Messi to emphatically finish and make Barca favourites for the Champions League round of 16 return leg at Camp Nou next month.
However, in what was a great spectacle under the lights at Stamford Bridge, Chelsea put in a strong performance against Europe's in form team and will be bitterly disappointed that they didn't get more from Conte's masterplan.