Chelsea came from a goal down on Wednesday to beat Dinamo Zagreb 2-1 at Stamford Bridge to end up as Group E winner in Champions League group stage.
The visitors took a shocking lead in just seven minutes into the match.
Bruno Petkovic proved he is got the killer instinct as when totally unmarked inside the box, powering a crashing header past the helpless goalkeeper.
Chelsea equalised eleven minutes later through Raheem Sterling.
Pierre-Emerick Aubameyang played in Sterling, who showed great determination to get to the ball before a couple of defenders and from inside the box slotted the ball into the bottom left corner.
Chelsea made it 2-1 on 30th minute. Denis Zakaria pounced on a loose ball inside the box and beat the goalkeeper with a low shot into the middle of the net.