Willian’s excellent second-half volley gave Chelsea victory over Lille in their second Champions League group stage match in France.
The Brazilian put away substitute Callum Hudson-Odoi’s cross in the 77th minute after Victor Osimhen had cancelled out Tammy Abraham’s opener.
Chelsea sit third in Group H following Ajax’s 3-0 win over Valencia.
However, they have kept just one clean sheet in 11 games under manager Frank Lampard, and none away from home.
The Blues lined up in a 3-4-2-1 formation as Lampard handed starts to 19-year-old Reece James and Fikayo Tomori, 21.
Both impressed but Lille were a threat throughout, and came close on several occasions in the second half.
Goalscorer Osimhen, bought as a summer replacement for Arsenal-bound Nicolas Pepe, caused problems in the air and it was his header which brought Lille level only 11 minutes after Abraham had given Chelsea the lead.
Benjamin Andre’s header was tipped past the post by Kepa Arrizabalaga, and the Chelsea keeper had a couple of nervous moments when he was forced to come out to the edge of the box to stop quick counter-attacks.
But Chelsea were the better side and deserved victory – Jorginho smacked the outside of the right post with a curling effort in the first half and Mason Mount was denied from close range after the break.
Abraham fighting for England spot
It was another test for Chelsea’s young squad, with four players in the starting XI who had played in the Championship last season.
Abraham, who turned 22 on Wednesday, was one of those, having spent 2018-19 on loan at Aston Villa.
He has impressed hugely since his return to Stamford Bridge, netting seven goals in as many Premier League games and picking up an assist in the Uefa Super Cup defeat by Liverpool.
And he was on the scoresheet again in France, bringing down Tomori’s diagonal cross with an exquisite touch before sorting out his feet and coolly slotting into the bottom right corner.
It was the first time since March 2012 that two Englishmen combined to score in the Champions League for Chelsea – the last when current boss Lampard set up John Terry – and Abraham will be hoping for a call-up to his country’s senior side when the squad is named on Thursday.
James became the first teenager to start for Chelsea in the Champions League since Ruben Loftus-Cheek in 2015 and was a threat from right wing-back – delivering dangerous crosses and using his pace to exploit the space in behind.
And Tomori was excellent at the back, while also recording his assist.
Willian’s experience proves decisive
In a season where Chelsea’s youngsters have impressed, it was 31-year-old Willian who provided the quality needed to win in Europe.
The technique in his volley was exquisite as he watched 18-year-old Hudson-Odoi’s cross fly onto his boot before he fired it into the ground and over the keeper.
The goal was his first in Europe since March, and his second in the space of five days after he netted against Brighton at Stamford Bridge.
It had taken him eight months to score in the Premier League, but he finished with a game-high six shots against the Seagulls.
Willian was a threat all evening in France too, whipping in dangerous crosses for Mount and Abraham before eventually scoring the winner.
“It’s never an easy place to play and Willian scores a worldie – no surprise there,” Abraham told BT Sport.
More to follow.