Pedro Neto and Enzo Fernandez sank Los Angeles FC to open Chelsea's Club World Cup account.
Portuguese wizard Neto was on his difficult best when the blues fought along the MLS side in Atlanta.
Enzo Maresca gave Starts to Cole Palmer and Nicolas Jackson in the burning Georgian heat.
The blues dominated the early stages against the Nervy -Americans, who packs themselves in the deep group of noisy ultras from California.
Palmer and Jackson both went close when the men of Maresca started control.
And it was Neto who sealed the breakthrough, his marker inside out on the right side of the box.
The Portuguese wing player format Hugo Lloris van La, before he insists along the ex-spurs keeper in his nearby pole.
Tempers flared on the break when Neto came in a push match with Denis Bouanga.
Both were lucky to avoid a card, with Reece James saving his teammate from a potentially unnecessary incident.
And it was the lively Bouanga who almost decreased after the restart, with Robert Sanchez brilliantly saving his legs after the Frenchman burst into the box.
La called for some French inspiration from the bank and raised the former Chelsea legend Olivier Giroud.
Chelsea followed the example by signing new £ 30 million Liam Delap for his debut.
Delap looked sharp and enthusiastic from the start, with the second on a plate for Enzo Fernandez.
The English U21 star peeled his marker and was released by Palmer by the wing.
Delap took one look up and broken down in a perfect cross for Fernandez to bundle in it.
La kept showing the heart and at least should have grabbed a comfort.
Bouanga was released late in the game, just to shoot directly to Sanchez.
And there was still time for Neto to hit the bar with a stunning attack in the last seconds.
It was done for Maresca's men, who now encounter the Flamengo of Brazil on Friday under control of group D.