Hakim Ziyech scored on his full debut as Chelsea scored three second half goals to thrash FC Krasnodar in Group E.
Jorginho hit the post with his early spot-kick after Timo Werner was fouled inside the box, but the Russian side, formed in 2008, were arguably the better side in the first half.
Krasnodar had their moments after the restart, too, and only the woodwork denied them an equaliser, with Yury Gazinsky volleying his shot at the crossbar.
But Chelsea weathered the storm and put the game beyond the hosts with two goals in three minutes.
Christian Pulisic came off the bench and won a soft penalty as his volley was adjudged to have struck a hand inside the box, and Werner – assuming spot-kick duties – smashed the ball down the middle to put the game beyond the hosts.
Ziyech then added a third with a smart turn and finish beneath the goalkeeper, as Chelsea racked up a comfortable lead.
And in stoppage-time Pulisic put the gloss on matters with a fine tight-angled finish, as Frank Lampard’s side bagged their first win in the group.