Arsenal striker Pierre-Emerick Aubameyang admits he must do better after his howler in defeat to Chelsea.

Aubameyang missed a glorious chance to equalise for Arsenal with the scores at 1-0 to Chelsea. However, he skied Hector Bellerin's cutback from around eight yards out.

And to make matters worse for the Gunners, Alvaro Morata went up the other end and scored shortly afterwards to double the Blues lead.

Today i missed tomorrow Must Be better !! — Aubameyang P-E (@Aubameyang7) August 18, 2018