Arsenal were heading for their first win under new boss Mikel Arteta when a Leno howler gifted Chelsea an equaliser at the Emirates. The mistake was the turning point in the match as Chelsea went on to claim all three points through Tammy Abraham.
Leno took to social media to accept responsibility for his error against Chelsea.
"Very tough day today but I have to look forward," the German goalkeeper wrote after the high-profile gaffe.
Bernd Leno (@Bernd_Leno) December 29, 2019