An unlikely goalscorer, N'Golo Kante opened the scoring after 34 minutes with the Blues' first shot on target.
"There's more opportunity of us creeping behind and coming to the front, only time will tell".
Two of Chelsea's summer signings - club-record purchase Kepa Arrizabalaga from Athletic Bilbao and Real Madrid loanee Mateo Kovacic - only arrived at Cobham on Wednesday, and Sarri admitted that he will need more time to get his new players up to speed with his ideas.
Still, teething problems were to be expected given the Italian manager's arrival halfway through preseason, and Chelsea can take heart from the win, earned with their best attacking player, Eden Hazard, sitting on the bench for 75 minutes. "That is something I used to play at my old club, Caen", Kante said this week.
"The first half was hard".
Things are looking good for Chelsea if he can maintain this sort of form.
"I think that Eden in this moment can not play for 90 minutes, he needs to have training", he explained.
Sarri's half-time talk proves effective: There was some cause for concern after Chelsea's first-half performance.
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Huddersfield boss David Wagner accepted his side were roundly outplayed, highlighting defensive errors as contributing to a heavy home loss.
"We are lucky now because we can work with one match a week".
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.
"I am very happy because in the first part of the season for us it is not easy to gain points", he added.
FW Alvaro Morata, 7 - Led the line enthusiastically, held up the ball well when in possession and looked confident enough to suggest the goals that have been missing from his game will come soon enough if Sarri persists with him.
Jorginho's penalty raised eyebrows and delighted neutrals, the former Napoli midfielder deceiving goalkeeper Ben Hamer with a skip in his run-up before rolling the ball home.
"Then we were 2-0 down after I think a good half and I think second half we started very slow, we were shocked".
"Then in the best period which we had in the second half after 20-25 minutes where we hit the bar again, where we were unlucky, we conceded the third one and then at the end it was a deserved win for Chelsea".