Croatian champions Dinamo Zagreb stunned two-time winners Chelsea as the Blues began their Champions League campaign with a shock 0-1 defeat at the Stadion Marimski.
Dinamo Zagreb, who have only just won their sixth of 44 UEFA Champions League games with the win in this meeting, held on superbly after Orsic had struck in the 13th minute.
Miroslav Orsic’s 18th goal in European football for Dinamo meant Thomas Tuchel lost in his 100th game in charge of the Blues.
Another individual who would leave Zagreb with a sour taste in his mouth is Mateo Kovacic who would have wants his return to his former club to end in a victory.
Deadline-day signing Aubameyang was handed his Chelsea debut and largely looked off colour albeit having a goal correctly ruled out for offside.
Armando Broja replaced Aubameyang just before the hour mark, but the Albanian striker had little impact in an overall disjointed performance from Thomas Tuchel’s men.
Chelsea launched a late onslaught on Dinamo’s goal and the hosts were relieved to see Reece James’ low shot rattle the foot of the post with five minutes remaining.