Chelsea secured a dramatic, and fortunate, home victory over Shakhtar Donetsk thanks to Victor Moses' injury-time header on Wednesday night.
Moses headed home Juan Mata's corner in the closing stages to secure the win but the Blues struggled to cope with the Ukrainian side over the course of the 90 minutes.
Fernando Torres opened the scoring on six minutes when he charged down a clearance from Shakhtar keeper Andriy Pyatov and the ball bounced into the back of the net.
However, Shakhtar hit back three minutes later when Luiz Adriano cut the ball back for Willian, who side footed the ball beyond Petr Cech.
The visitors continued to press in the opening 45 minutes, with Cech the busier of the two keepers, but it was Chelsea who managed to take a lead into the break thanks to a fantastic strike from Oscar.
The ball fell kindly to the Brazilian from a Pyatov clearance and Oscar brought the ball down with his chest before lifting the ball beyond the out-of-position keeper and into the goal.
Shakhtar started the second half with the same kind of intensity they displayed in the opening 15 minutes and grabbed a deserved equaliser with the first real attack after the restart.
Fernandinho managed to pick out Darijo Srna with a delightful curling cross, and the latter played a simple pass to Willian who confidently placed the ball into the net.
Shakhtar continued to push for a winner but Chelsea stole the points at the death as substitute Moses was allowed the space to head home Mata's corner.