Chelsea started their UEFA Champions League campaign with a lone goal loss to Dinamo Zagreb.
Mislav Orsic scored the only goal for the Croatian champions and they held on to secure a precious three points.
Pierre-Emerick Aubameyang, who was signed on deadline day was handed a debut. Besides scoring a goal ruled out for off side, he was mostly passive for the 59 minutes he played.
In another early kick-off Borussia Dortmund hammered Copenhagen 3-0.
