It came in the 34th minute when N'Golo Kante's mis-hit strike from Willian's cross bounced past Huddersfield goalkeeper Ben Hamer.
"This is understandable after this good first half and you sit at half-time and you are 2-0 down".
The Italian's footballing philosophy was widely praised during his time in charge of Napoli, with the so-called "Sarri-ball" system helping the club to push Juventus all the way in the Serie A title race last season.More news: Stolen Plane Flies From Seattle, Crashes After Jets Scramble To Intercept
The introduction of Eden Hazard with 15 minutes to play allowed Chelsea to regain control of the ball, especially in the final third, and it was his driving run and pass that set up the onrushing Pedro to wrap up the three points with a chipped finish. Chelsea were strong today, but I don't think we've shown too much respect.
"Then I think in the second half the opponents were a bit exhausted and it was easier".
"Then we were 2-0 down after I think a good half and I think second half we started very slow, we were shocked".
Huddersfield boss David Wagner accepted his side were roundly outplayed, highlighting defensive errors as contributing to a heavy home loss.More news: Pogba gives cryptic response on United future
Sarri's half-time talk proves effective: There was some cause for concern after Chelsea's first-half performance.
Sarri, who led Napoli to two second-place finishes in three seasons at the Stadio San Paolo, averages around five packets of cigarettes a day, so you can see why it would be hard to avoid tobacco for such a long period.
Huddersfield were a persistent threat from crosses into the box and they went close to an equaliser when Steve Mounie headed Mathias Jorgensen's flick-on against the inside of the upright. He did not want a new defender to help with a switch to a back four from the three-man alignment preferred by Antonio Conten and neither was he keen on another striker, despite the struggles last season of Alvaro Morata. If you look at the result you can think of an easy game.
"For sure in this moment, we are not at the top of our potential", he said.More news: Bielsa Won’t Get Carried Away After Leeds Hammer Lampard’s Derby
"In the first half we started on the front foot, where we really wanted to be active", he said. He took responsibility for the penalty won by Alonso and the cool, clinical manner in which he scored suggests he may get further opportunities even when regular taker Hazard is on the pitch. I don't know. I arrived in the middle of July, so the problem was there.